US3421371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft speed and angular position indicating system
Assignee: GERALD W WILLIAMS JR
•
Filing: 1966-07-15
•
Granted: 1969-01-14
•
Expires: 1986-07-15
Abstract
No abstract record available.
Inventors
- 👤 Gerald W Williams Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:58
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/489; G01P13/00; G01P13/02; G01P5/00; G01P5/02; G01P5/06; G01P5/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2923861A
Cited
US2873415A
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US3068692A
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US3316761A
Cited
US3276256A
Cited
US3282099A
Cited
US3264554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |