Patent US2077733A successfully refreshed from Google Patents.
US2077733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible rotary motor
Assignee: Chicago Pneumatic Tool Co LLC
•
Filing: 1935-08-13
•
Granted: 1937-04-20
•
Expires: 1955-08-13
Abstract
No abstract record available.
Inventors
- 👤 Lester A Amtsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:51
CPC Classifications
F; F01; F01C; F01C20/00; F01C20/10; F01C20/16; F01C20/04; F01C21/00; F01C21/003; F01C21/006
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) | 1940-04-19 | 1940-10-19 | 1941-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-19 | 1944-10-19 | 1945-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-19 | 1948-10-19 | 1949-04-20 | $7700.00 | Window Closed / Lapsed |