US2895335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Systems for obtaining gas samples for analysis
Assignee: Leeds and Northrup Co
•
Filing: 1956-01-12
•
Granted: 1959-07-21
•
Expires: 1976-01-12
Abstract
No abstract record available.
Inventors
- 👤 Harry A Kraftson
- 👤 Edward M Yard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:34
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N1/4077
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US815407A
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US2152251A
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US2179919A
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US2356845A
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US2604185A
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US2579282A
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US2550933A
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US2685205A
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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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |