US2621276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical strain gauge and method of making same
Assignee: Lockheed Martin Corp
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Filing: 1949-12-09
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Granted: 1952-12-09
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Expires: 1969-12-09
Abstract
No abstract record available.
Inventors
- 👤 Walter L Howland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:41
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2287; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099; Y10T29/49103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1819246A
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US2159106A
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US2334843A
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US2430994A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |