Patent US3210518A successfully refreshed from Google Patents.
US3210518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow cathode device
Assignee: Alloyd Electronics Corp
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Filing: 1962-12-21
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Granted: 1965-10-05
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 John R Morley
- 👤 Barry A George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:50
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/06; H01J37/077; H01J37/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A CATHODE FOR AN ELECTRON BEAM GUN ASSEMBLY, COMPRISING AN ELONGATED TUBULAR BODY OF REFRACTORY MATERIAL, CONDUCT MEANS CONNECTED TO SAID FOR DELIVERING A FLOW OF INERT GAS THROUGH SAID BODY, SAID BODY BEING FORMED WHICH A PLURALITY OF DISCHARGE ORIFICES OF RESTRICTED SIZE, A.C. MEANS CONNECTED TO SAID BODY FOR ELECTRICALLY
Claim 2
Dependent Claim
52 words
A CATHODE FOR AN ELECTRON BEAM GUN ASSEMBLY, COMPRISING AN ELONGATED TUBULAR BODY OF REFRACTORY MATERIAL, CONDUCT MEANS CONNECTED TO SAID FOR DELIVERING A FLOW OF INERT GAS THROUGH SAID BODY, SAID BODY BEING FORMED WHICH A PLURALITY OF DISCHARGE ORIFICES OF RESTRICTED SIZE, A.C. MEANS CONNECTED TO SAID BODY FOR ELECTRICALLY
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |