US2397703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking shaft lock
Assignee: Individual
•
Filing: 1943-05-14
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Granted: 1946-04-02
•
Expires: 1963-05-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Stallman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:46
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16D1/093; F16D1/095; F16D1/096; F16B; F16B21/00; F16B21/10; F16B21/16; F16B21/18; F16B21/186; F16C; F16C35/00; F16C35/04; F16C35/06; F16C35/063; F16C19/00; F16C19/02; F16C19/14; F16C19/18; F16C19/181; F16C19/183; F16C2226/00; F16C2226/10; F16C2226/16
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) | 1949-04-01 | 1949-10-01 | 1950-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-01 | 1953-10-01 | 1954-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-01 | 1957-10-01 | 1958-04-02 | $7700.00 | Window Closed / Lapsed |