US2864631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stuffing boxes
Assignee: Pure Oil Co
•
Filing: 1954-06-29
•
Granted: 1958-12-16
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Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 Manning H Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:05
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/182; Y; Y10; Y10S; Y10S277/00; Y10S277/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319464A
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US1805344A
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US1966202A
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US2186185A
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US2300385A
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US2351343A
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US2366824A
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US2407904A
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US2649316A
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US2660458A
Cited
US2648554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |