Patent US2932547A successfully refreshed from Google Patents.
US2932547A
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US
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Seismic wave recording system
Assignee: United Geophysical Corp
•
Filing: 1955-06-28
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Granted: 1960-04-12
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Expires: 1975-06-28
Abstract
No abstract record available.
Inventors
- 👤 Merrill L Swan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:06
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2803809A
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US1098932A
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US2427421A
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US2375950A
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US2578133A
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US2620890A
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US2496392A
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US2607035A
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US2626004A
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US2774646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |