US2756508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination sine-bar and v-block
Assignee: Individual
•
Filing: 1954-02-23
•
Granted: 1956-07-31
•
Expires: 1974-02-23
Abstract
No abstract record available.
Inventors
- 👤 Patrick C O'grady
- 👤 Charles H O'grady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:30
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/24; G01B5/242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1071289A
Cited
US2032728A
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FR905852A
Cited
US2378743A
Cited
US2364546A
Cited
US2376959A
Cited
US2409936A
Cited
US2536629A
Cited
US2567517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |