US2946059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stapling apparatus
Assignee: Duo Fast Corp
•
Filing: 1956-03-29
•
Granted: 1960-07-26
•
Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Oscar A Wandel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:31
CPC Classifications
B; B25; B25C; B25C5/00; B25C5/16; B25C5/1686
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733442A
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US1596724A
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US1383993A
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GB321751A
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US1939632A
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US2174708A
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US2161540A
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US2225054A
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US2459313A
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US2632889A
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US2653316A
Cited
US2818570A
Cited
FR1090179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |