US1728038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic circuit controller
Assignee: General Electric Co
•
Filing: 1923-08-02
•
Granted: 1929-09-10
•
Expires: 1943-08-02
Abstract
No abstract record available.
Inventors
- 👤 Burstyn Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:15
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H71/20
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) | 1932-09-09 | 1933-03-11 | 1933-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-09-09 | 1937-03-11 | 1937-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-09-09 | 1941-03-11 | 1941-09-10 | $7700.00 | Window Closed / Lapsed |