Patent US3225911A successfully refreshed from Google Patents.
US3225911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring-shaped getter with top deflector, for improving and/or keeping up vacuum in electronic tubes
Assignee: Individual
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Filing: 1961-08-10
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Granted: 1965-12-28
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Expires: 1981-08-10
Abstract
No abstract record available.
Inventors
- 👤 Porta Paolo Della
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:34
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18; H01J7/186; H01J29/00; H01J29/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
GETTER MEANS FOR SELECTIVELY CONTROLLING THE DISTRIBUTION OF GETTER MATERIAL OVER THE INTERIOR SURFACE AREA OF A VACUUM TUBE COMPRISING AN ANNULAR TROUGH HAVING AN OPEN UPPER PERIPHERY ADAPTED TO CONTAIN AN EVAPORABLE GETTER MATERIAL, AND AN ANNULAR DEFLECTOR MEANS IMMEDIATELY ABOVE AND SUBSTANTIALLY COEXTENSIVE WITH SAID OPEN UPPER PERIPHERY OF SAID TROUGH, SAID DEFLECTOR MEANS BEING SO SHAPED AND SO PROPORTIONED RELATIVE TO SAID TROUGH AS TO FROM INTERNALLY AND EXTERNALLY DISPOSED PERIPHERAL EXHAUST SLITS BETWEEN SAID TROUGH AND SAID DEFLECTOR MEANS.
Claim 2
Dependent Claim
83 words
GETTER MEANS FOR SELECTIVELY CONTROLLING THE DISTRIBUTION OF GETTER MATERIAL OVER THE INTERIOR SURFACE AREA OF A VACUUM TUBE COMPRISING AN ANNULAR TROUGH HAVING AN OPEN UPPER PERIPHERY ADAPTED TO CONTAIN AN EVAPORABLE GETTER MATERIAL, AND AN ANNULAR DEFLECTOR MEANS IMMEDIATELY ABOVE AND SUBSTANTIALLY COEXTENSIVE WITH SAID OPEN UPPER PERIPHERY OF SAID TROUGH, SAID DEFLECTOR MEANS BEING SO SHAPED AND SO PROPORTIONED RELATIVE TO SAID TROUGH AS TO FROM INTERNALLY AND EXTERNALLY DISPOSED PERIPHERAL EXHAUST SLITS BETWEEN SAID TROUGH AND SAID DEFLECTOR MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |