US1794686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety system for electric plants
Assignee: Individual
•
Filing: 1928-11-20
•
Granted: 1931-03-03
•
Expires: 1948-11-20
Abstract
No abstract record available.
Inventors
- 👤 Heinisch Otto
- 👤 Riedl Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:41
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/16; H02H3/162; H02H3/165
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) | 1934-03-02 | 1934-09-01 | 1935-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-02 | 1938-09-01 | 1939-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-02 | 1942-09-01 | 1943-03-03 | $7700.00 | Window Closed / Lapsed |