Patent US2584612A successfully refreshed from Google Patents.
US2584612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring
Assignee: Phillips Petroleum Co
•
Filing: 1945-05-04
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Granted: 1952-02-05
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Expires: 1965-05-04
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Piety
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:23
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1826415A
Cited
US1975114A
Cited
US1883249A
Cited
CH161910A
Cited
GB446783A
Cited
US2169787A
Cited
US2308695A
Cited
US2375613A
Cited
US2348225A
Cited
US2407757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |