Patent US2652730A successfully refreshed from Google Patents.
US2652730A
Expired / Lapsed
US
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Drive for propellers
Assignee: RTX Corp
•
Filing: 1946-04-06
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Granted: 1953-09-22
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Expires: 1966-04-06
Abstract
No abstract record available.
Inventors
- 👤 Philip P Newcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:40
CPC Classifications
F; F16; F16D; F16D67/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19149; Y10T74/19153
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2170649A
Cited
US2212278A
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US2267334A
Cited
US2332593A
Cited
US2351483A
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US2404657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |