Patent US1969379A successfully refreshed from Google Patents.
Patent US3517999A successfully refreshed from Google Patents.
US3517999A
Expired / Lapsed
US
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Optical strain gauge
Assignee: TDK Micronas GmbH
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Filing: 1966-01-07
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Granted: 1970-06-30
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Expires: 1986-01-07
Abstract
No abstract record available.
Inventors
- 👤 David P Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/24; A; A61; A61B; A61B5/00; A61B5/02; A61B5/024; A61B5/02416; A61B5/02427; A61B5/08; A61B5/0816; A61B5/103; A61B5/11; A61B5/113; A61B5/1135; G01B; G01B11/00; G01B11/16; A61B2562/00; A61B2562/02; A61B2562/0261; A61B2562/0266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |