US2507281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signature opening and depositing mechanism
Assignee: Warner and Swasey Co
•
Filing: 1946-06-06
•
Granted: 1950-05-09
•
Expires: 1966-06-06
Abstract
No abstract record available.
Inventors
- 👤 Andrew A Spisak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:34
CPC Classifications
B; B65; B65H; B65H5/00; B65H5/30; B65H5/303; B65H5/305; B65H5/307; B65H2301/00; B65H2301/40; B65H2301/43; B65H2301/435; B65H2301/4351
Claims Analysis
Total Claims: 0
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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) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |