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US2449067A
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Constant flow gas analyzer
Assignee: Individual
•
Filing: 1946-07-29
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Granted: 1948-09-14
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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 09:09
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/02; G01N7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1112432A
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FR570451A
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DE396529C
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DE486287C
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US2139902A
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US2263335A
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US2370817A
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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 |