Patent US2920880A successfully refreshed from Google Patents.
US2920880A
Expired / Lapsed
US
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Devices employing strain gauges and adapted to measure weight or force
Assignee: Imperial Chemical Industries Ltd
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Filing: 1956-04-17
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Granted: 1960-01-12
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Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Laycock Geoffrey Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:36
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2206; G01L1/2212; G01G; G01G3/00; G01G3/12; G01G3/14; G01G3/1402; G01G3/1404
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2488349A
Cited
US2592009A
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US2566326A
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US2487595A
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US2663781A
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US2813958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |