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US1386972A
Expired / Lapsed
US
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Automatic control of electric generating sets
Assignee: Individual
•
Filing: 1918-02-18
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Granted: 1921-08-09
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Expires: 1938-02-18
Abstract
No abstract record available.
Inventors
- 👤 Sunderland Leo
- 👤 Pillinger Gilbert Cecil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:30
CPC Classifications
H; H02; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/08
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) | 1924-08-08 | 1925-02-07 | 1925-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-08-08 | 1929-02-07 | 1929-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-08-08 | 1933-02-07 | 1933-08-09 | $7700.00 | Window Closed / Lapsed |