Patent US2611267A successfully refreshed from Google Patents.
US2611267A
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US
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Pressure gauge for sand formation testers
Assignee: Individual
•
Filing: 1944-10-06
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Granted: 1952-09-23
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Expires: 1964-10-06
Abstract
No abstract record available.
Inventors
- 👤 Pennington Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:20
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/081; E21B49/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1586201A
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US1923413A
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US1969141A
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US2189919A
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US2223913A
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US2158569A
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US2265098A
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US2261027A
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US2259867A
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US2441894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |