US2177801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric generator
Assignee: Individual
•
Filing: 1938-02-01
•
Granted: 1939-10-31
•
Expires: 1958-02-01
Abstract
No abstract record available.
Inventors
- 👤 Erren Rudolf Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:48
CPC Classifications
H; H02; H02K; H02K16/00; H02K16/005; F; F03; F03D; F03D13/00; F03D13/20; F03D9/00; F03D9/20; F03D9/25; H02K7/00; H02K7/18; H02K7/1807; H02K7/1823; H02K7/183; H02K7/1838; F05; F05B; F05B2240/00; F05B2240/90; F05B2240/91; F05B2240/915; F05B2240/9151; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E10/728; Y10; Y10S; Y10S416/00; Y10S416/04
Claims Analysis
Total Claims: 0
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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) | 1942-10-30 | 1943-05-01 | 1943-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-30 | 1947-05-01 | 1947-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-30 | 1951-05-01 | 1951-10-31 | $7700.00 | Window Closed / Lapsed |