US3000402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread protector
Assignee: Phillips Petroleum Co
•
Filing: 1958-02-12
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Granted: 1961-09-19
•
Expires: 1978-02-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Mark M Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:45
CPC Classifications
B; B65; B65D; B65D59/00; F; F16; F16L; F16L57/00; F16L57/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US839834A
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US2061151A
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US2251897A
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US2620938A
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US2617751A
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US2689665A
Cited
US2761493A
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US2729245A
Cited
US2849058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |