Patent US2648976A successfully refreshed from Google Patents.
US2648976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for gas sampling and recording analyses and temperatures
Assignee: JOHN F ROBB
•
Filing: 1946-04-12
•
Granted: 1953-08-18
•
Expires: 1966-04-12
Abstract
No abstract record available.
Inventors
- 👤 Bur Armand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:10
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US594533A
Cited
US1779619A
Cited
US1658391A
Cited
US2020529A
Cited
US2109222A
Cited
US2065703A
Cited
US2285457A
Cited
US2290075A
Cited
US2341727A
Cited
US2370260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |