US2809524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic damping of a gravimeter
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-01-11
•
Granted: 1957-10-15
•
Expires: 1974-01-11
Abstract
No abstract record available.
Inventors
- 👤 Horace T Masterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:34
CPC Classifications
G; G01; G01V; G01V7/00; G01V7/08; G05; G05D; G05D19/00; G05D19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1136719A
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US2322681A
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US2623741A
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US2675222A
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US2589710A
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US2674885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |