Patent US1797253A successfully refreshed from Google Patents.
US1797253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating motor
Assignee: Individual
•
Filing: 1927-07-09
•
Granted: 1931-03-24
•
Expires: 1947-07-09
Abstract
No abstract record available.
Inventors
- 👤 Carl S Weyandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:02
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/12; B; B25; B25D; B25D11/00; B25D11/06; B25D11/064; B25D17/00; B25D17/20; B25D2217/00; B25D2217/0057; B25D2217/0061; B25D2250/00; B25D2250/275
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) | 1934-03-23 | 1934-09-22 | 1935-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-23 | 1938-09-22 | 1939-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-23 | 1942-09-22 | 1943-03-24 | $7700.00 | Window Closed / Lapsed |