US2537029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing screw drivers
Assignee: Phillips Screw Co
•
Filing: 1946-08-06
•
Granted: 1951-01-09
•
Expires: 1966-08-06
Abstract
No abstract record available.
Inventors
- 👤 Cecil M Cambern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:52
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/001; B25B15/004; B25B15/005; B21; B21K; B21K5/00; B23; B23P; B23P13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US961184A
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FR486294A
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US2142239A
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US2317319A
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US2366682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |