US2881890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism
Assignee: Borg Warner Corp
•
Filing: 1956-03-05
•
Granted: 1959-04-14
•
Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:35
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/08; F01P7/081; F01P7/082; F01P7/087; F16; F16D; F16D43/00; F16D43/02; F16D43/25
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1598677A
Cited
US936190A
Cited
GB163440A
Cited
US1770419A
Cited
DE593596C
Cited
US1940090A
Cited
US2005468A
Cited
FR831712A
Cited
US2381567A
Cited
US2459377A
Cited
US2603420A
Cited
US2740388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |