US2449485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas analyzer
Assignee: Elsag Bailey Inc
•
Filing: 1942-01-01
•
Granted: 1948-09-14
•
Expires: 1962-01-01
Abstract
No abstract record available.
Inventors
- 👤 Johnson Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:04
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US583529A
Cited
US624889A
Cited
US1305170A
Cited
US524361A
Cited
US742879A
Cited
US1180786A
Cited
US1465955A
Cited
US1454291A
Cited
US1754722A
Cited
US1745331A
Cited
US1825830A
Cited
US1861877A
Cited
US2023610A
Cited
US1969888A
Cited
GB425604A
Cited
GB404591A
Cited
US2015882A
Cited
US2267722A
Cited
GB457777A
Cited
US2227899A
Cited
US2124074A
Cited
US2122070A
Cited
US2237558A
Cited
US2293019A
Cited
US2363478A
Cited
US2329459A
Cited
US2334926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |