Patent US3308392A successfully refreshed from Google Patents.
US3308392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic amplifier having means for changing the amplification of the seismic signal by discrete steps proportional to a given power of two
Assignee: Esso Production Co
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Filing: 1965-02-04
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Granted: 1967-03-07
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Expires: 1985-02-04
Abstract
No abstract record available.
Inventors
- 👤 Ed R Mccarter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:13
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/24; G01V1/245
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
APPARATUS FOR CONTROLLING THE AMPLITUDE OF AN ELECTRICAL SIGNAL WHICH PROGRESSIVELY DECREASES IN AMPLITUDE WITH RESPECT TO TIME COMPRISING: AN INPUT CIRCUIT; AN OUTPUT CIRCUIT; SIGNAL AMPLITUDE VARYING MEANS CONNECTING SAID INPUT CIRCUIT TO SAID OUTPUT CIRCUIT TO PROVIDE AN ELECTRICAL SIGNAL CHANNEL THEREBETWEEN; CONTROL MEANS CONNECTED TO SAID AMPLITUDE VARYING MEANS TO PROGRESSIVELY INCREASE THE AMPLIFICATION THEREOF RESPONSIVE TO SUCCESSIVE ELECTRICAL PULSES RECEIVED THEREBY, SAID CONTROL MEANS BEING OPERATIVE TO INCREASE THE AMPLIFICATION OF SAID AMPLITUDE VARYING MEANS BY DISCRETE STEPS PROPORTIONAL TO A GIVEN POWER OF TWO RESPONSIVE TO EACH PULSE RECEIVED THEREBY; AND
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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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |