US3236439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-compartment expandable envelopes
Assignee: QUALITY PARK ENVELOPE CO
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Filing: 1964-06-22
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Granted: 1966-02-22
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Edward P Johnson
- 👤 Clark A Abrahamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/0005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
AN EXPANDABLE ENVELOPE COMPRISING; A RECTANGULAR FRONT PANEL JOINED ALONG ITS RESPECTIVE SIDES BY A CLOSURE PANEL FOR FOLDING OVER THE ENVELOPE AND SEALING SAME CLOSED AND EXPANDABLE SIDE AND BOTTOM PANELS; A REAR PANEL JOINED TO SAID BOTTOM PANEL, SAID FRONT, SIDE, BOTTOM AND REAR PANELS FORMING AN ENVELOPE COMPARTMENT; DIVISION PANELS INTEGRALLY JOINED TO SAID SIDE PANELS FOR EXTENDING INTO THE ENVELOPE COMPARMENT, SAID DIVISION PANELS HAVING EXPANDABLE GUSSETED DIVIDER PANELS TRANSVERSELY DISPOSED IN THE ENVELOPE COMPARTMENT FOR DIVIDING SAME INTO A PLURALITY OF EXPANDABLE COMPARTMENTS, AND HAVING FURTHER, A FIRST ADHESIVE WALL SECURED TO SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |