US2744514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket protector
Assignee: Hanna Coal and Ore Corp
•
Filing: 1953-07-21
•
Granted: 1956-05-08
•
Expires: 1973-07-21
Abstract
No abstract record available.
Inventors
- 👤 John P Vidmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:07
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/122; F16J15/123; F02; F02F; F02F11/00; F02F11/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR369142A
Cited
US1825769A
Cited
US1880643A
Cited
US2161833A
Cited
GB533881A
Cited
US2679241A
Cited
US2658493A
Cited
US2676580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |