Patent US2873696A successfully refreshed from Google Patents.
US2873696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hatch cover lock
Assignee: Standard Railway Equipment Manufacturing Co
•
Filing: 1954-09-27
•
Granted: 1959-02-17
•
Expires: 1974-09-27
Abstract
No abstract record available.
Inventors
- 👤 Edward S Cisco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:38
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/16; F16J13/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US534720A
Cited
US1588862A
Cited
US890175A
Cited
US934933A
Cited
US1018041A
Cited
US1087167A
Cited
US2056270A
Cited
US2324356A
Cited
US2565706A
Cited
US2652787A
Cited
US2679419A
Cited
US2647473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |