Patent US2002977A successfully refreshed from Google Patents.
US2002977A
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US
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Dynamometer
Assignee: AT&T Inc
•
Filing: 1931-06-29
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Granted: 1935-05-28
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Expires: 1951-06-29
Abstract
No abstract record available.
Inventors
- 👤 James A Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:58
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/04; G01L5/06; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936; Y10T24/394; Y10T24/44; Y10T24/44573; Y10T24/4459
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) | 1938-05-27 | 1938-11-26 | 1939-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-05-27 | 1942-11-26 | 1943-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-05-27 | 1946-11-26 | 1947-05-28 | $7700.00 | Window Closed / Lapsed |