US2802337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic drive systems
Assignee: AT&T Inc
•
Filing: 1953-10-01
•
Granted: 1957-08-13
•
Expires: 1973-10-01
Abstract
No abstract record available.
Inventors
- 👤 Tillman T Bunch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:29
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/475; B; B65; B65H; B65H59/00; B65H59/38; B65H59/381; F04; F04C; F04C11/00; F04C11/005; F16H57/00; F16H57/04; F16H57/0434; F16H57/0436; F16H57/0438
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE292916C
Cited
USRE21893E
Cited
US1031451A
Cited
US1418921A
Cited
US2008687A
Cited
US2232317A
Cited
US2341985A
Cited
US2677389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |