US3270276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Geophysical apparatus for indicating strata beneath the earth's surface including means for preventing transients from reaching the indicating means
Assignee: J D CAVANESS
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Filing: 1965-04-13
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Granted: 1966-08-30
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Expires: 1985-04-13
Abstract
No abstract record available.
Inventors
- 👤 Charles A Donaldson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:51
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/02; G01V3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A GEOPHYSICAL APPARATUS, COMPRISING: (A) A FIRST MEANS FOR GENERATING NEGATIVE PULSES WITH RESPECT TO GROUND, (B) A SECOND MEANS FOR GENERATING POSITIVE PULSES WITH RESPECT TO GROUND, (C) MEANS CONNECTED TO SAID NEGATIVE PULSES AND SAID SIMULTANEOUSLY DIRECTING SAID NEGATIVE PULSES AND SAID POSITIVE PULSES TO UNDERGROUND SURFACES FOR OBTAINING PULSE REFLECTIONS THEREFROM, (D) PLATE MEANS FOR PICKING UP SAID PULSE REFLECTION, (E) MEANS ELECTRICALLY CONNECTED TO SAID PLATE MEANS FOR FORMING INDICATIONS IN RESPONSE TO SAID PULSE REFLECTIONS WHICH ARE PICKED UP AND WHICH REPRESENT GEOPHYSICAL STRATA BENEATH THE EARTH''S SURFACE, AND (F) MEANS CONNECTED TO THE INDICATOR MEANS FOR BALANCING OUT THE GENERATED NEGATIVE AND POSITIVE PULSES TO AVOID INDICATING ANY TRANSIENTS ARISING FROM THE GENERATED PULSES IN THE INDICATIONS WHICH REPRESENT GEOPHYSICAL STRATA BENEATH THE EARTH''S SURFACE AS INDICATED ON SAID INDICATOR MEANS
Claim 2
Dependent Claim
137 words
A GEOPHYSICAL APPARATUS, COMPRISING: (A) A FIRST MEANS FOR GENERATING NEGATIVE PULSES WITH RESPECT TO GROUND, (B) A SECOND MEANS FOR GENERATING POSITIVE PULSES WITH RESPECT TO GROUND, (C) MEANS CONNECTED TO SAID NEGATIVE PULSES AND SAID SIMULTANEOUSLY DIRECTING SAID NEGATIVE PULSES AND SAID POSITIVE PULSES TO UNDERGROUND SURFACES FOR OBTAINING PULSE REFLECTIONS THEREFROM, (D) PLATE MEANS FOR PICKING UP SAID PULSE REFLECTION, (E) MEANS ELECTRICALLY CONNECTED TO SAID PLATE MEANS FOR FORMING INDICATIONS IN RESPONSE TO SAID PULSE REFLECTIONS WHICH ARE PICKED UP AND WHICH REPRESENT GEOPHYSICAL STRATA BENEATH THE EARTH''S SURFACE, AND (F) MEANS CONNECTED TO THE INDICATOR MEANS FOR BALANCING OUT THE GENERATED NEGATIVE AND POSITIVE PULSES TO AVOID INDICATING ANY TRANSIENTS ARISING FROM THE GENERATED PULSES IN THE INDICATIONS WHICH REPRESENT GEOPHYSICAL STRATA BENEATH THE EARTH''S SURFACE AS INDICATED ON SAID INDICATOR MEANS
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |