Patent US3469453A successfully refreshed from Google Patents.
US3469453A
Expired / Lapsed
US
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Fluid sampling apparatus
Assignee: Individual
•
Filing: 1965-10-08
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Granted: 1969-09-30
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Expires: 1985-10-08
Abstract
No abstract record available.
Inventors
- 👤 Norman A Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:24
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/20; G01N1/2035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2192325A
Cited
US2794344A
Cited
US2927465A
Cited
US2995931A
Cited
US3090323A
Cited
US3229527A
Cited
US3390580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |