US2945123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass spectrometer
Assignee: Phillips Petroleum Co
•
Filing: 1954-04-30
•
Granted: 1960-07-12
•
Expires: 1974-04-30
Abstract
No abstract record available.
Inventors
- 👤 James R Parsons
- 👤 Dale A Fluegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:11
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/02; H01J49/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2535032A
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US2602898A
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US2617843A
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US2790945A
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US2854629A
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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) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |