US2444703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly
Assignee: ConocoPhillips Co
•
Filing: 1944-05-22
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Granted: 1948-07-06
•
Expires: 1964-05-22
Abstract
No abstract record available.
Inventors
- 👤 Jones Harry Roswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:27
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10; Y; Y10; Y10S; Y10S277/00; Y10S277/927; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US354936A
Cited
US1572922A
Cited
US1740924A
Cited
US1906313A
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US2102797A
Cited
GB528814A
Cited
US2252029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |