Patent US4978333A successfully refreshed from Google Patents.
US3379972A
Expired / Lapsed
US
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Non-contacting displacement gauge having a feedback means for controlling the vibration amplitude of the probe
Assignee: Reliance Electric and Engineering Co
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Filing: 1963-12-26
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Granted: 1968-04-23
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 George B Foster
- 👤 Kenneth A Ostrander
- 👤 Cary Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:15
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3180136A
Cited
US2796756A
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US3187256A
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US3252084A
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US3263167A
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US3316486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |