US2666169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural electric motor follow-up system
Assignee: Individual
•
Filing: 1948-12-20
•
Granted: 1954-01-12
•
Expires: 1968-12-20
Abstract
No abstract record available.
Inventors
- 👤 John R Jarvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:58
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1238292A
Cited
US1399332A
Cited
US1562917A
Cited
US2480157A
Cited
US2414430A
Cited
US2239768A
Cited
US2471422A
Cited
US2408969A
Cited
US2504017A
Cited
US2510467A
Cited
US2466035A
Cited
US2453451A
Cited
US2598221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |