Patent US3281788A successfully refreshed from Google Patents.
US2974284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotors for electrical indicating instruments
Assignee: —
•
Filing: —
•
Granted: 1961-03-07
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Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:47
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/02; G01R5/08; G01D; G01D13/00; G01D13/22; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2565412A
Cited
US2773239A
Cited
US801419A
Cited
US2441960A
Cited
US2777192A
Cited
US2757443A
Cited
US2832935A
Cited
US2858451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |