US1999808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Phillips Petroleum Co
•
Filing: 1933-04-07
•
Granted: 1935-04-30
•
Expires: 1953-04-07
Abstract
No abstract record available.
Inventors
- 👤 Isaac H Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:30
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; F16K11/0743; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-04-29 | 1938-10-29 | 1939-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-29 | 1942-10-29 | 1943-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-29 | 1946-10-29 | 1947-04-30 | $7700.00 | Window Closed / Lapsed |