Patent US2831986A successfully refreshed from Google Patents.
US2116221A
Expired / Lapsed
US
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Apparatus to automatically determine the angular position of unbalance in rotatable bodies
Assignee: Individual
•
Filing: 1935-08-31
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Granted: 1938-05-03
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Expires: 1955-08-31
Abstract
No abstract record available.
Inventors
- 👤 Sivertsen Jens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:15
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/02; G01M1/08; G01M1/14; G01M1/16; G01M1/22
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) | 1941-05-02 | 1941-11-01 | 1942-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-05-02 | 1945-11-01 | 1946-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-05-02 | 1949-11-01 | 1950-05-03 | $7700.00 | Window Closed / Lapsed |