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US3476516A
Expired / Lapsed
US
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Gas analyzer
Assignee: CHARLES E CURRY
•
Filing: 1966-09-12
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Granted: 1969-11-04
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Expires: 1986-09-12
Abstract
No abstract record available.
Inventors
- 👤 Charles E Curry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:34
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/77; G01N21/78; G01N21/783; G01N33/00; G01N33/48; G01N33/483; G01N33/497; G01N33/4972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2824789A
Cited
US2968536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |