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US4053057A Expired / Lapsed US ⏱️ 0.0 years remaining

Suspended filing folders

Assignee: Oxford Pendaflex Canada Ltd
•
Filing: 1976-05-03
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Granted: 1977-10-11
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Expires: 1996-05-03
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Abstract

Abstract A suspended filing folder has the top edge of one side slotted and folded around one suspension bar to accept slot-in tabs, and the other suspension bar is formed into a laminar structure with the top edge of the other side, and is embossed with a row of crimps to retain clip-on tabs.

Inventors

  • 👤 Wesley Raymond Snowden

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 20:07
CPC Classifications
B; B42; B42F; B42F21/00; B42F21/06; B42F21/065; B42F21/08

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 182 words
A suspended filing folder comprising a sheet of flexible material folded along a medial line to form opposed walls joined at their lower edges, and first and second suspension bars secured to the upper edges of the walls and having projecting end portions extending beyond the ends of the walls, the end portions being formed with notches to engage rails in a file, the first suspension bar being bonded within a tubular channel formed by the upper edge portion of one of said walls folded upon and secured to itself to form with said bar a first laminar structure, said structure adapted for engagement with tabs sprung into engagement with said laminar structure, and a folded over upper edge portion of the other of said walls enclosing and bonded to a second suspension bar to form a second laminar structure, all the layers of at least one of said laminar structures being embossed with a longitudinal row of indentations extending longitudinally with respect to the suspension bar and forming detents adapted for engagement with tabs sprung into engagement with said laminar structure.
Claim 2
Dependent Claim 182 words
A suspended filing folder comprising a sheet of flexible material folded along a medial line to form opposed walls joined at their lower edges, and first and second suspension bars secured to the upper edges of the walls and having projecting end portions extending beyond the ends of the walls, the end portions being formed with notches to engage rails in a file, the first suspension bar being bonded within a tubular channel formed by the upper edge portion of one of said walls folded upon and secured to itself to form with said bar a first laminar structure, said structure adapted for engagement with tabs sprung into engagement with said laminar structure, and a folded over upper edge portion of the other of said walls enclosing and bonded to a second suspension bar to form a second laminar structure, all the layers of at least one of said laminar structures being embossed with a longitudinal row of indentations extending longitudinally with respect to the suspension bar and forming detents adapted for engagement with tabs sprung into engagement with said laminar structure.
Claim 3
Dependent Claim 40 words
A folder as defined in claim 1 wherein the inner side of the tubular channel around said first suspension bar is formed with a series of equidistantly spaced vertical slots across the lower marginal edge of said first suspension bar.
Claim 4
Dependent Claim 20 words
A folder as defined in claim 1 wherein alternate indentations in said second laminar structure project from opposite sides thereof.

References Cited (Backward Citations)

US1490344A Cited
FR765510A Cited
US2312717A Cited
DE874294C Cited
US2874699A Cited
GB810194A Cited
US2910985A Cited
US3238947A Cited
US3244179A Cited
US3263688A Cited
CH475853A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-10-10 1981-04-11 1981-10-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-10-10 1985-04-11 1985-10-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-10-10 1989-04-11 1989-10-11 $7700.00 Window Closed / Lapsed

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