US2462946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic system of process control by infrared spectrometry
Assignee: Gulf Research and Development Co
•
Filing: 1947-04-11
•
Granted: 1949-03-01
•
Expires: 1967-04-11
Abstract
No abstract record available.
Inventors
- 👤 Norman D Coggeshall
- 👤 Muskat Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:33
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/3577
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1746525A
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US2063140A
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US2176013A
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US2314800A
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US2376311A
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US2386831A
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US2404064A
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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) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |