Patent US2501217A successfully refreshed from Google Patents.
US2501217A
Expired / Lapsed
US
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Adjustable drive shaft
Assignee: Cleveland Pneumatic Tool Co
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Filing: 1945-10-24
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Granted: 1950-03-21
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Expires: 1965-10-24
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Hawn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:53
CPC Classifications
F; F16; F16C; F16C1/00; F16C1/02; F16C1/04; B; B25; B25B; B25B23/00; B25B23/0007; B25B23/0028; Y; Y10; Y10S; Y10S81/00; Y10S81/08; Y10T; Y10T408/00; Y10T408/65; Y10T408/665
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US597469A
Cited
GB190305549A
Cited
DE343880C
Cited
US1739756A
Cited
US1817000A
Cited
US1886952A
Cited
US2073903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |