US3507147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sample inlet method and apparatus for gas analyzers employing a storage column and gas separator
Assignee: Varian Medical Systems Inc
•
Filing: 1967-08-21
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Granted: 1970-04-21
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Expires: 1987-08-21
Abstract
No abstract record available.
Inventors
- 👤 Peter M Llewellyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:40
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/72; G01N30/728; G01N30/04; G01N30/06; G01N30/84; G01N2030/8411; G01N2030/8417
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3201971A
Cited
US3316751A
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US3356458A
Cited
US3301040A
Cited
US3429105A
Cited
US3430417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |