US3524575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric stapling machinne
Assignee: Swingline Inc
•
Filing: 1967-03-30
•
Granted: 1970-08-18
•
Expires: 1987-03-30
Abstract
No abstract record available.
Inventors
- 👤 Antoon M Hurkmans
- 👤 Menachem Futter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:02
CPC Classifications
B; B25; B25C; B25C5/00; B25C5/02; B25C5/0221; B25C5/0228; B25C5/10; B25C5/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1945377A
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US2267990A
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US2298520A
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US2436473A
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US2580505A
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US2928094A
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US2874401A
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US2959786A
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US3041618A
Cited
US3029436A
Cited
US3305808A
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US3345546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |