US3290945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential pressure responsive device
Assignee: Individual
•
Filing: 1965-06-04
•
Granted: 1966-12-13
•
Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 Li Yao Tzu
- 👤 Lee Shih-Ying
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:17
CPC Classifications
G; G01; G01L; G01L13/00; G01L13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN COMBINATION; A FORCE SENSING TRANSDUCER, A DISPLACEABLE MEMBER PROVIDING THE INPUT TO THE TRANSDUCER, AND MEANS CONNECTING THE DISPLACEALE MEMBER AND TRANSDUCER INCLUDING A FORCE LIMITING CONNECTOR COMPRISING A PAIR OF ELONGATED RESILIENTLY FLEXIBLE MEMBERS EXTENDING PARALLEL TO EACH OTHER, AT LEAST ONE OF SAID MEMBERS HAVING A CONVEXO-CONCAVE CROSS SECTION, MEANS JOINING ONE END OF ONE OF SAID MEMBERS TO THE CORRESPONDING END OF THE
Claim 2
Dependent Claim
67 words
IN COMBINATION; A FORCE SENSING TRANSDUCER, A DISPLACEABLE MEMBER PROVIDING THE INPUT TO THE TRANSDUCER, AND MEANS CONNECTING THE DISPLACEALE MEMBER AND TRANSDUCER INCLUDING A FORCE LIMITING CONNECTOR COMPRISING A PAIR OF ELONGATED RESILIENTLY FLEXIBLE MEMBERS EXTENDING PARALLEL TO EACH OTHER, AT LEAST ONE OF SAID MEMBERS HAVING A CONVEXO-CONCAVE CROSS SECTION, MEANS JOINING ONE END OF ONE OF SAID MEMBERS TO THE CORRESPONDING END OF THE
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Cited
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Cited
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Cited
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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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |