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 05:16
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/16; F16J13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1588862A
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US1018041A
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US2056270A
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US2324356A
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US2565706A
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US2652787A
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US2679419A
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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 |