US1990525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal chuck
Assignee: Individual
•
Filing: 1933-07-31
•
Granted: 1935-02-12
•
Expires: 1953-07-31
Abstract
No abstract record available.
Inventors
- 👤 Philip M Chancellor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:53
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/18; B23B31/14; B23B31/142; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17231; Y10T279/17239; Y10T279/17256; Y10T279/24; Y10T279/247
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) | 1938-02-11 | 1938-08-13 | 1939-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-02-11 | 1942-08-13 | 1943-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-02-11 | 1946-08-13 | 1947-02-12 | $7700.00 | Window Closed / Lapsed |