Patent US2938500A successfully refreshed from Google Patents.
US2938500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collet actuator
Assignee: Union Manufacturing Co
•
Filing: 1955-11-14
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Granted: 1960-05-31
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Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Damijonaitis Alexandra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:57
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/30; B23B31/302; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1241; Y10T279/1249
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2597280A
Cited
US1454121A
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US1968700A
Cited
US1934411A
Cited
US2291147A
Cited
US2573403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |