Patent US5528051A successfully refreshed from Google Patents.
US3301461A
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Assignee: Waldorf Paper Products Co
•
Filing: 1963-08-28
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Granted: 1967-01-31
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Expires: 1983-08-28
Abstract
No abstract record available.
Inventors
- 👤 William O Kroeschell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:16
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/02; B65; B65D; B65D5/00; B65D5/20; B65D5/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A FILE CONTAINER FOR USE IN STORING PAPERS, THE CONTAINER COMPRISING A NON-OPAQUE CLOSABLE CONTAINER BODY, A CONTINUOUS FILM OF PIGMENT OF PLASTIC INCORPORATING SILVER METALLIC PARTICLES ON SAID BODY, WHEREBY SAID CONTAINER IS RELATIVELY LIGHTPROOF.
Claim 2
Dependent Claim
36 words
A FILE CONTAINER FOR USE IN STORING PAPERS, THE CONTAINER COMPRISING A NON-OPAQUE CLOSABLE CONTAINER BODY, A CONTINUOUS FILM OF PIGMENT OF PLASTIC INCORPORATING SILVER METALLIC PARTICLES ON SAID BODY, WHEREBY SAID CONTAINER IS RELATIVELY LIGHTPROOF.
References Cited (Backward Citations)
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US2144453A
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US2452204A
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US3077709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |