Patent US3138262A successfully refreshed from Google Patents.
Patent US2039451A successfully refreshed from Google Patents.
US2039451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission mechanism
Assignee: Individual
•
Filing: 1933-03-11
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Granted: 1936-05-05
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Expires: 1953-03-11
Abstract
No abstract record available.
Inventors
- 👤 Carroll H Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:52
CPC Classifications
F; F16; F16D; F16D41/00; F16D41/06; F16D41/08; F16D41/086; F16D41/088; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19256; Y10T74/19274; Y10T74/19377; Y10T74/19386; Y10T74/194
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) | 1939-05-05 | 1939-11-04 | 1940-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-05 | 1943-11-04 | 1944-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-05 | 1947-11-04 | 1948-05-05 | $7700.00 | Window Closed / Lapsed |