Patent US3197722A successfully refreshed from Google Patents.
US3197722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure transducer
Assignee: International Resistance Co
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Filing: 1961-06-07
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Granted: 1965-07-27
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Expires: 1981-06-07
Abstract
No abstract record available.
Inventors
- 👤 Chass Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:33
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/16; Y; Y10; Y10S; Y10S73/00; Y10S73/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
A PRESSURE TRANSDUCER COMPRISING A CORE OF A MAGNETIC MATERIAL THE PERMEABILITY OF WHICH IS VARIED BY STRESSING THE MATERIAL, SAID CORE BEING CIRCULAR IN TRANSVERSE CROSS-SECTION, AND HAVING A SEPARATE LONGITUDINALLY EXTENDING BLIND PASSAGE IN EACH END THEREOF AND A PAIR OF ANNULAR GROOVES IN THE OUTER SURFACE THEROF, EACH OF SAID GROOVES BEING AROUND A SEPARATE ONE OF SAID PASSAGES, A SEPARATE PRIMARY WINDING OF AN INSULATED ELECTRICALLY CONDUCTIVE WIRE WOUND AROUND SAID CORE IN EACH OF SAID GROOVES, SAID PRIMARY WINDINGS BEING OF THE SAME LENGTH AND BEING ELECTRICALLY CONNECTED TOGETHER, A SEPARATE SEC-
References Cited (Backward Citations)
US2427866A
Cited
US2459210A
Cited
US2683989A
Cited
US2570672A
Cited
US2887882A
Cited
US2952000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |