US1817108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric condenser
Assignee: American Electric Power Co Inc
•
Filing: 1929-03-23
•
Granted: 1931-08-04
•
Expires: 1949-03-23
Abstract
No abstract record available.
Inventors
- 👤 Steerup Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815; Y10T428/31826
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) | 1934-08-03 | 1935-02-02 | 1935-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-03 | 1939-02-02 | 1939-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-03 | 1943-02-02 | 1943-08-04 | $7700.00 | Window Closed / Lapsed |