US2449067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant flow gas analyzer
Assignee: Individual
•
Filing: 1946-07-29
•
Granted: 1948-09-14
•
Expires: 1966-07-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Victor Guillemin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:39
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/02; G01N7/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US854696A
Cited
US1112432A
Cited
DE329386C
Cited
DE375899C
Cited
FR570451A
Cited
DE396529C
Cited
DE486287C
Cited
US2139902A
Cited
US2263335A
Cited
US2370817A
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 |