Patent FR723876A successfully refreshed from Google Patents.
US2394436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting control for electric discharge device
Assignee: General Electric Co
•
Filing: 1943-12-17
•
Granted: 1946-02-05
•
Expires: 1963-12-17
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Frech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:56
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/02; H05B41/04; H05B41/12; Y; Y10; Y10S; Y10S315/00; Y10S315/02
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) | 1949-02-04 | 1949-08-06 | 1950-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-02-04 | 1953-08-06 | 1954-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-02-04 | 1957-08-06 | 1958-02-05 | $7700.00 | Window Closed / Lapsed |