US3456722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal-operated valve
Assignee: Phillips Petroleum Co
•
Filing: 1966-12-29
•
Granted: 1969-07-22
•
Expires: 1986-12-29
Abstract
No abstract record available.
Inventors
- 👤 Archie J Cornelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:22
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B34/00; E21B34/06; E21B36/00; E21B36/001; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US306352A
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US386098A
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US2060994A
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US2213950A
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US2436727A
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GB670728A
Cited
US2956575A
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US3240270A
Cited
US3120267A
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US3343598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |