US2965134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampling system
Assignee: Phillips Petroleum Co
•
Filing: 1955-07-05
•
Granted: 1960-12-20
•
Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter C Pouppirt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:59
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095; G01N35/1097; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692; Y10T137/877; Y10T137/87708; Y10T137/8774; Y10T137/87772
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1759636A
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US2030394A
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US2185394A
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US2505810A
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US2467461A
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US2406192A
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US2691475A
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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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |