US2592129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a self-locking nut
Assignee: RICHARD W LUCE
•
Filing: 1948-10-29
•
Granted: 1952-04-08
•
Expires: 1968-10-29
Abstract
No abstract record available.
Inventors
- 👤 Henry O Engstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:57
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/64; B21K1/70; B21K1/707
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB545484A
Cited
US2316684A
Cited
US2381110A
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US2429832A
Cited
US2333290A
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US2381111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |