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US2845952A
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Nipple plugging device
Assignee: Service Pipe Line Co
•
Filing: 1954-04-20
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Granted: 1958-08-05
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Expires: 1974-04-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:08
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/04; Y; Y10; Y10T; Y10T408/00; Y10T408/94; Y10T408/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2118376A
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US2077507A
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US2187838A
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US2250244A
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GB571261A
Cited
US2476907A
Cited
US2517870A
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US2679173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |