US2963272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor blade shrouding
Assignee: Motors Liquidation Co
•
Filing: 1957-07-19
•
Granted: 1960-12-06
•
Expires: 1977-07-19
Abstract
No abstract record available.
Inventors
- 👤 Harvey W Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:44
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; F01D5/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US764452A
Cited
US875644A
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US1371328A
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US1720754A
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US1930645A
Cited
US2221684A
Cited
US2502539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |