US1380134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed-controlling device for motors
Assignee: DOMESTIC ELECTRIC Co
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Filing: 1918-10-28
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Granted: 1921-05-31
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Expires: 1938-10-28
Abstract
No abstract record available.
Inventors
- 👤 Joel R Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:03
CPC Classifications
F; F16; F16D; F16D51/00; F16D51/10; H; H02; H02K; H02K7/00; H02K7/10; H02K7/102; F16D2127/00; F16D2127/001; F16D2127/002; F16D2129/00; F16D2129/04; F16D2129/043
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) | 1924-05-30 | 1924-11-29 | 1925-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-05-30 | 1928-11-29 | 1929-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-05-30 | 1932-11-29 | 1933-05-31 | $7700.00 | Window Closed / Lapsed |