Patent US2648818A successfully refreshed from Google Patents.
US2648818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas pressure measuring
Assignee: RCA Corp
•
Filing: 1950-10-14
•
Granted: 1953-08-11
•
Expires: 1970-10-14
Abstract
No abstract record available.
Inventors
- 👤 Martin J Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:45
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/02; H01J41/04; G; G01; G01L; G01L21/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2501702A
Cited
US2516704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |