Patent US412187A successfully refreshed from Google Patents.
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Method of and apparatus for measuring the composition of gas
Assignee: Republic Flow Meters Co
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Filing: 1943-06-14
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Granted: 1948-03-16
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Expires: 1963-06-14
Abstract
No abstract record available.
Inventors
- 👤 Robert A Ackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:29
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/20; G01N25/22; G01N25/28; G01N25/34; G01N25/36; G01N25/30; G01N25/32; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US977970A
Cited
FR404131A
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US1627204A
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US1863373A
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FR661796A
Cited
GB352267A
Cited
US2052181A
Cited
US1995979A
Cited
US2166104A
Cited
US2285866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |