US2798129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure balance indicator
Assignee: Phillips Petroleum Co
•
Filing: 1953-06-29
•
Granted: 1957-07-02
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Reese
- 👤 R L Posey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
G; G01; G01L; G01L11/00; G01L11/004; G01L11/006
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2295217A
Cited
DE745894C
Cited
US2382547A
Cited
US2511509A
Cited
US2652727A
Cited
US2497025A
Cited
US2645949A
Cited
US2645128A
Cited
US2596152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |