Patent US2904665A successfully refreshed from Google Patents.
US2904665A
Expired / Lapsed
US
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Vacuum trap
Assignee: Applied Radiation Corp
•
Filing: 1957-06-18
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Granted: 1959-09-15
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Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Hayden S Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:47
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2434519A
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US2659392A
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US2726681A
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US2858972A
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US2808980A
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |