US3239803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable capacitance geophone assembly for seismic prospecting
Assignee: Atlantic Richfield Co
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Filing: 1960-06-13
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Granted: 1966-03-08
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Expires: 1980-06-13
Abstract
No abstract record available.
Inventors
- 👤 Josiah J Godbey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:35
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/18; G01V1/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A GEOPHONE ASSEMBLY FOR DETECTING VIBRATIONAL ENERGY COMPRISING: (A) A HOLLOW CASING MEMBER FORMING THE EXTERIOR OF SAID GEOPHONE, (B) A CRYSTAL OSCILLATOR MOUNTED WITHIN SAID CASING CONSISTING OF A PIEZOELECTRIC CRYSTAL CONTAINED BETWEEN THE CONDUCTIVE PLATES OF A FIRST CAPACITOR, AND (CE A VIBRATION DETECTOR MEANS INCLUDING A SECOND CAPACITOR IN SERIES WITH SAID CRYSTAL OSCILLATOR HAVING A FIRST CONDUCTIVE PLATE RIGIDLY FIXED TO SAID CASING
Claim 2
Dependent Claim
67 words
A GEOPHONE ASSEMBLY FOR DETECTING VIBRATIONAL ENERGY COMPRISING: (A) A HOLLOW CASING MEMBER FORMING THE EXTERIOR OF SAID GEOPHONE, (B) A CRYSTAL OSCILLATOR MOUNTED WITHIN SAID CASING CONSISTING OF A PIEZOELECTRIC CRYSTAL CONTAINED BETWEEN THE CONDUCTIVE PLATES OF A FIRST CAPACITOR, AND (CE A VIBRATION DETECTOR MEANS INCLUDING A SECOND CAPACITOR IN SERIES WITH SAID CRYSTAL OSCILLATOR HAVING A FIRST CONDUCTIVE PLATE RIGIDLY FIXED TO SAID CASING
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |