US3384884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Movable core differential transformer position sensor
Assignee: PAUL FRANK VAR
•
Filing: 1965-10-15
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Granted: 1968-05-21
•
Expires: 1985-10-15
Abstract
No abstract record available.
Inventors
- 👤 Var Paul Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:45
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/20; H; H02; H02P; H02P13/00; H02P13/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2932972A
Cited
US3100889A
Cited
US2992373A
Cited
US3091122A
Cited
US3235790A
Cited
US3142794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |