Patent US2958781A successfully refreshed from Google Patents.
US2958781A
Expired / Lapsed
US
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Radio-physiological method and means
Assignee: Individual
•
Filing: 1957-03-18
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Granted: 1960-11-01
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Expires: 1977-03-18
Abstract
No abstract record available.
Inventors
- 👤 Marchal Maurice
- 👤 Marchal Marie Therese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:40
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/0002; A61B5/0031; A61B5/07; A61B5/073; G; G01; G01T; G01T1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A RESPONDER UNIT IN THE FORM OF AN INTROMITTENT CAPSULE COMPRISING A SEALED CASING OF INSULATING MATERIAL, A PIEZO-ELECTRIC CRYSTAL MOUNTED IN SAID SEALED CASING, AND SIGNAL RECEIVING MEANS WITHIN SAID CASING CONNECTED WITH SAID CRYSTAL AND FORMING A RESONATING CIRCUIT WITH SAID CRYSTAL.
Claim 2
Dependent Claim
44 words
A RESPONDER UNIT IN THE FORM OF AN INTROMITTENT CAPSULE COMPRISING A SEALED CASING OF INSULATING MATERIAL, A PIEZO-ELECTRIC CRYSTAL MOUNTED IN SAID SEALED CASING, AND SIGNAL RECEIVING MEANS WITHIN SAID CASING CONNECTED WITH SAID CRYSTAL AND FORMING A RESONATING CIRCUIT WITH SAID CRYSTAL.
References Cited (Backward Citations)
US2812427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |