US2878640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety chain claw
Assignee: Individual
•
Filing: 1957-05-13
•
Granted: 1959-03-24
•
Expires: 1977-05-13
Abstract
No abstract record available.
Inventors
- 👤 Johnson Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:59
CPC Classifications
F; F16; F16G; F16G17/00; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE521816A
Cited
US1314832A
Cited
US797715A
Cited
US1179951A
Cited
GB191503048A
Cited
US1476627A
Cited
US2182439A
Cited
GB568615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |