US3309010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Getter ion vacuum pump
Assignee: Varian Medical Systems Inc
•
Filing: 1964-02-10
•
Granted: 1967-03-14
•
Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 James S Hetherington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:42
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
A SUBLIMKATION MEANS COMPRISING A LENGTH OF FILAMENT, A LENGTH OF GETTER MATERIAL OVERWOUND BY AND LOOSELY HELD WITHIN SAID FILAMENT, SAID GETTER BEING MADE UP OF A THICK MULIPLE STANDED ROPE OF REACTIVE METAL, AND SAID FILAMENT BEING MADE UP OF ONE OR MORE COILS OF A REFRACTORY METAL.
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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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |