US2661929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jig for drilling key lewis slots
Assignee: H E FLETCHER CO
•
Filing: 1948-05-03
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Granted: 1953-12-08
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Expires: 1968-05-03
Abstract
No abstract record available.
Inventors
- 👤 Frans E Aspelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:48
CPC Classifications
B; B23; B23B; B23B47/00; B23B47/28; B23B2247/00; B23B2247/04; B23B2247/10
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |