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US2967451A
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Method and apparatus for gas analysis
Assignee: Waters Corp
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Filing: 1957-04-04
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Granted: 1961-01-10
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Expires: 1977-04-04
Abstract
No abstract record available.
Inventors
- 👤 William R Farrall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:28
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/66; G01N21/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2244732A
Cited
US2300916A
Cited
US2670649A
Cited
US2767325A
Cited
US2708387A
Cited
US2790438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |