US2806545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for seismic exploration
Assignee: Precision Exploration Co
•
Filing: 1955-01-10
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Granted: 1957-09-17
•
Expires: 1975-01-10
Abstract
No abstract record available.
Inventors
- 👤 Edward G Schempf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:19
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
APPARATUS FOR USE IN SEISMIC EXPLORATION COMPRISING A MAGNETIC MEMBER FOR RECORDING INFORMATION, MEANS
Claim 2
Dependent Claim
14 words
APPARATUS FOR USE IN SEISMIC EXPLORATION COMPRISING A MAGNETIC MEMBER FOR RECORDING INFORMATION, MEANS
References Cited (Backward Citations)
US2018737A
Cited
US2059018A
Cited
US2276306A
Cited
US2450366A
Cited
US2732906A
Cited
US2767389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |