US3092755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High power vacuum tubes
Assignee: Individual
•
Filing: 1958-04-11
•
Granted: 1963-06-04
•
Expires: 1978-04-11
Abstract
No abstract record available.
Inventors
- 👤 David M Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A HIGH POWER VACUUM TUBE, WHICH IS CAPABLE OF PROVIDING A POSITIVE INDICATION WHEN IT CANNOT OPERATE PROPERLY, COMPRISING A CATHODE ELEMENT ADAPTED TO YIELD A COPIOUS SUPPLY OF ELECTRONS WHICH GENERATES THE USEFUL OUTPUT OF THE TUBE IN COMBINATION WITH A SUPPLEMENTARY FUSE-LIKE NON-ELECTRON-EMMISSIVE FILAMENT USED SOLELY FOR THE PURPOSE OF CONDUCTING A TEST CURRENT, TO DETERMINE THE CONDITION OF VACUUM WITHIN THE TUBE, WHEREBY THE SUPPLEMENTARY FILAMENT BURNS OUT TO INTERRUPT THE TEST CURRENT WHEN THE TUBE HAS LOST ITS VACUUM.
Claim 2
Dependent Claim
83 words
A HIGH POWER VACUUM TUBE, WHICH IS CAPABLE OF PROVIDING A POSITIVE INDICATION WHEN IT CANNOT OPERATE PROPERLY, COMPRISING A CATHODE ELEMENT ADAPTED TO YIELD A COPIOUS SUPPLY OF ELECTRONS WHICH GENERATES THE USEFUL OUTPUT OF THE TUBE IN COMBINATION WITH A SUPPLEMENTARY FUSE-LIKE NON-ELECTRON-EMMISSIVE FILAMENT USED SOLELY FOR THE PURPOSE OF CONDUCTING A TEST CURRENT, TO DETERMINE THE CONDITION OF VACUUM WITHIN THE TUBE, WHEREBY THE SUPPLEMENTARY FILAMENT BURNS OUT TO INTERRUPT THE TEST CURRENT WHEN THE TUBE HAS LOST ITS VACUUM.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |