US2993569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic lock for small shafts
Assignee: Individual
•
Filing: 1959-06-08
•
Granted: 1961-07-25
•
Expires: 1979-06-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard W Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:41
CPC Classifications
F; F16; F16B; F16B1/00; F16B1/02; F16B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US814301A
Cited
FR863455A
Cited
US2458441A
Cited
US2543840A
Cited
US2870887A
Cited
US2812044A
Cited
US2865479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |