Patent US1783669A successfully refreshed from Google Patents.
US1783669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air motor
Assignee: Individual
•
Filing: 1927-05-18
•
Granted: 1930-12-02
•
Expires: 1947-05-18
Abstract
No abstract record available.
Inventors
- 👤 Dew R Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:39
CPC Classifications
F; F03; F03D; F03D1/00; F03D1/02; F03D1/025; F03D13/00; F03D13/20; F03D13/22; F03D9/00; F03D9/20; F03D9/25; F05; F05B; F05B2240/00; F05B2240/40; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E10/728
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) | 1933-12-01 | 1934-06-02 | 1934-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-12-01 | 1938-06-02 | 1938-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-12-01 | 1942-06-02 | 1942-12-02 | $7700.00 | Window Closed / Lapsed |