Patent US1498120A successfully refreshed from Google Patents.
US2263277A
Expired / Lapsed
US
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Key holder for chucks
Assignee: Zephyr Manufacturing Co Inc
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Filing: 1940-01-20
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Granted: 1941-11-18
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Expires: 1960-01-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Schumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:46
CPC Classifications
B; B23; B23B; B23B45/00; B23B45/006; Y; Y10; Y10T; Y10T279/00; Y10T279/34; Y10T279/3431; Y10T279/3443; Y10T408/00; Y10T408/91; Y10T408/96
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-11-17 | 1945-05-19 | 1945-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-17 | 1949-05-19 | 1949-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-17 | 1953-05-19 | 1953-11-18 | $7700.00 | Window Closed / Lapsed |