US2697648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing system for recorders
Assignee: ExxonMobil Oil Corp
•
Filing: 1949-08-11
•
Granted: 1954-12-21
•
Expires: 1969-08-11
Abstract
No abstract record available.
Inventors
- 👤 Robert B Kerr
- 👤 Raymond K Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:46
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/24; G01V1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN SEISMIC PROSPECTING WHERE SEISMIC WAVES AND A TIME BACK IMPULSE SIMULTANEOUSLY ARE GENERATED COINCIDENT WITH DETONATION OF AN EXPLOSIVE CHARGE AND APPLIED TO A RECORDING SYSTEM INCLUDING MEANS FOR RECORDING SAID SEISMIC WAVES AT A FIRST RECORDING POINT ALONG THE PATH OF A PHOTOGRAPHIC FILM AND AN INITIALLY RESTRAINED REED BLOCKING A BEAM OF LIGHT, THE COMBINATION OF MEANS RESPONSIVE TO SAID TIME BREAK IMPULSE FOR RELEASING SAID REED FOR PERIODIC PASSAGE OF SAID BEAM OF LIGHT, AND MEANS FOR PROJECTING SAID BEAM OF LIGHT TO A SECOND RECORDING POINT DISPLACED FROM SAID FIRST RECORDING POINT BY AN AMOUNT IN TERMS OF TRAVEL-TIME OF SAID FILM EQUAL TO THE TIME INTERVAL BETWEEN SAID TIME BREAK IMPULSE AND THE FIRST PASSAGE OF LIGHT.
Claim 2
Dependent Claim
123 words
IN SEISMIC PROSPECTING WHERE SEISMIC WAVES AND A TIME BACK IMPULSE SIMULTANEOUSLY ARE GENERATED COINCIDENT WITH DETONATION OF AN EXPLOSIVE CHARGE AND APPLIED TO A RECORDING SYSTEM INCLUDING MEANS FOR RECORDING SAID SEISMIC WAVES AT A FIRST RECORDING POINT ALONG THE PATH OF A PHOTOGRAPHIC FILM AND AN INITIALLY RESTRAINED REED BLOCKING A BEAM OF LIGHT, THE COMBINATION OF MEANS RESPONSIVE TO SAID TIME BREAK IMPULSE FOR RELEASING SAID REED FOR PERIODIC PASSAGE OF SAID BEAM OF LIGHT, AND MEANS FOR PROJECTING SAID BEAM OF LIGHT TO A SECOND RECORDING POINT DISPLACED FROM SAID FIRST RECORDING POINT BY AN AMOUNT IN TERMS OF TRAVEL-TIME OF SAID FILM EQUAL TO THE TIME INTERVAL BETWEEN SAID TIME BREAK IMPULSE AND THE FIRST PASSAGE OF LIGHT.
References Cited (Backward Citations)
US2184953A
Cited
US2313091A
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US2375433A
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US2424622A
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US2490461A
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US2496392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |