US3495165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum device gas measurement apparatus and method
Assignee: General Electric Co
•
Filing: 1967-02-13
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Granted: 1970-02-10
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Expires: 1987-02-13
Abstract
No abstract record available.
Inventors
- 👤 James D Cobine
- 👤 James M Lafferty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:57
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/668; G; G01; G01R; G01R31/00; G01R31/327; G01R31/3271; G01R31/3272; G01R31/3274; H01J; H01J41/00; H01J41/02; H01J41/06; H01J9/00; H01J9/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2544078A
Cited
US2602914A
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US2696566A
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US2880373A
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US3154680A
Cited
US3223873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |