US2690612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug expansion tool
Assignee: Standard Oil Development Co
•
Filing: 1947-12-06
•
Granted: 1954-10-05
•
Expires: 1967-12-06
Abstract
No abstract record available.
Inventors
- 👤 Norman D Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:47
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/53; Y10T29/53552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US571077A
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US607492A
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US1075384A
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US1226209A
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US1587689A
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US1833700A
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US2118756A
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US2141274A
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US2299365A
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US2485022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |