Patent US3295409A successfully refreshed from Google Patents.
Patent US4135782A successfully refreshed from Google Patents.
Patent US4290679A successfully refreshed from Google Patents.
Patent US2329323A successfully refreshed from Google Patents.
US2329323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ratio regulator
Assignee: Phillips Petroleum Co
•
Filing: 1941-06-26
•
Granted: 1943-09-14
•
Expires: 1961-06-26
Abstract
No abstract record available.
Inventors
- 👤 George R Benz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:38
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/04; G; G05; G05D; G05D11/00; G05D11/006; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3009; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/776; Y10T137/7781; Y10T137/7793; Y10T137/7796; Y10T137/7835; Y10T137/7836
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1946-09-13 | 1947-03-15 | 1947-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-13 | 1951-03-15 | 1951-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-13 | 1955-03-15 | 1955-09-14 | $7700.00 | Window Closed / Lapsed |