US2397126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear drive mechanism
Assignee: AT&T Inc
•
Filing: 1944-04-27
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Granted: 1946-03-26
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Expires: 1964-04-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Buhrendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:10
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/12; F16H2057/121; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1956; Y10T74/19585; Y10T74/19595; Y10T74/196; Y10T74/19623; Y10T74/20
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) | 1949-03-25 | 1949-09-24 | 1950-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-03-25 | 1953-09-24 | 1954-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-03-25 | 1957-09-24 | 1958-03-26 | $7700.00 | Window Closed / Lapsed |