US2257892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible rotary motor
Assignee: Cleveland Pneumatic Tool Co
•
Filing: 1939-02-23
•
Granted: 1941-10-07
•
Expires: 1959-02-23
Abstract
No abstract record available.
Inventors
- 👤 Paul Van Sittert
- 👤 Lloyd G Speth
- 👤 John H Engein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:28
CPC Classifications
F; F04; F04B; F04B45/00; F04B45/02; F04B45/027; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3441; F01C1/3442; F01C1/348; F01C20/00; F01C20/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1944-10-06 | 1945-04-07 | 1945-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-10-06 | 1949-04-07 | 1949-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-10-06 | 1953-04-07 | 1953-10-07 | $7700.00 | Window Closed / Lapsed |