US3564909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical dynamometer
Assignee: Vibrac Corp
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Filing: 1968-12-16
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Granted: 1971-02-23
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Expires: 1988-12-16
Abstract
Abstract AN OPTICAL DYNAMOMETER INVOLVING THREE OPTICAL ELEMENTS WHICH COOPERATE TO MODULATE A LIGHT BEAM AS A FUNCTION OF POWER INPUT.
Inventors
- 👤 Roger D Foskett
- 👤 Clark E Johnson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:15
CPC Classifications
G; G01; G01L; G01L3/00; G01L3/02; G01L3/04; G01L3/10; G01L3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |