US2543857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collet chuck
Assignee: Gisholt Machine Co
•
Filing: 1948-10-25
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Granted: 1951-03-06
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Expires: 1968-10-25
Abstract
No abstract record available.
Inventors
- 👤 Leifer Lorenz Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:28
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/16; B23B31/16195; B23B31/16216; B23B31/20; B23B31/201; B23B31/204; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1241; Y10T279/1249; Y10T279/1258; Y10T279/1274; Y10T279/1291; Y10T279/19; Y10T279/1961
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US65790A
Cited
US2362146A
Cited
GB221455A
Cited
US2387266A
Cited
US2397159A
Cited
US2466651A
Cited
US2410344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |