US1940513A
Expired / Lapsed
US
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Process for determining the combustible content in a gas mixture
Assignee: Bacharach Instrument Co
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Filing: 1932-03-19
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Granted: 1933-12-19
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Expires: 1952-03-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:28
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/204998; Y10T436/205831; Y10T436/21; Y10T436/218; Y10T436/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-12-18 | 1937-06-19 | 1937-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-18 | 1941-06-19 | 1941-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-18 | 1945-06-19 | 1945-12-19 | $7700.00 | Window Closed / Lapsed |