US2382846A
Expired / Lapsed
US
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Differential gearing
Assignee: AT&T Inc
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Filing: 1943-07-03
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Granted: 1945-08-14
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Expires: 1963-07-03
Abstract
No abstract record available.
Inventors
- 👤 Charles C Barber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:24
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/12; F16H48/00; F16H48/06; F16H48/10; F16H48/11; F16H2048/106; F16H57/02; F16H57/021; F16H57/022; F16H2057/0222; F16H2057/0224; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1956; Y10T74/19565; Y10T74/1957; Y10T74/19623
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) | 1948-08-13 | 1949-02-12 | 1949-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-13 | 1953-02-12 | 1953-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-13 | 1957-02-12 | 1957-08-14 | $7700.00 | Window Closed / Lapsed |