US2281774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slotting machine
Assignee: WIRTHSEN ASSOCIATES Inc
•
Filing: 1938-11-14
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Granted: 1942-05-05
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Expires: 1958-11-14
Abstract
No abstract record available.
Inventors
- 👤 Louis G Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:08
CPC Classifications
B; B23; B23D; B23D1/00; B23D1/08; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5115; Y10T409/00; Y10T409/50; Y10T409/502624; Y10T409/504756; Y10T409/506232; Y10T409/507544
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-05-04 | 1945-11-03 | 1946-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-05-04 | 1949-11-03 | 1950-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-05-04 | 1953-11-03 | 1954-05-05 | $7700.00 | Window Closed / Lapsed |