Patent US1997170A successfully refreshed from Google Patents.
Patent US3427876A successfully refreshed from Google Patents.
US3427876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensing cell and system
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1966-07-25
•
Granted: 1969-02-18
•
Expires: 1986-07-25
Abstract
No abstract record available.
Inventors
- 👤 Richard K Steele
- 👤 Thamo C Cruise
- 👤 Samuel W Jang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:56
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/0007; G01L19/0046
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA630601A
Cited
US2148013A
Cited
US2336500A
Cited
US3177726A
Cited
US3178937A
Cited
US3355936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |