Patent US2708316A successfully refreshed from Google Patents.
US2708316A
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Tubing caliper
Assignee: OTIS PRESSURE CONTROL Inc
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Filing: 1951-07-02
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Granted: 1955-05-17
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Expires: 1971-07-02
Abstract
No abstract record available.
Inventors
- 👤 John V Fredd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:15
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1329456A
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US1924071A
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US2150070A
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US2251040A
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US2292113A
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US2544609A
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US2518663A
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US2567548A
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US2600847A
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US2578236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |