Patent US3208137A successfully refreshed from Google Patents.
US3208137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating electron tubes
Assignee: RCA Corp
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Filing: 1961-12-08
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Granted: 1965-09-28
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Expires: 1981-12-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry V Knauf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:13
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/42; H01J19/46; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; H01J2893/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
METHOD OF BRAZING TOGETHER PARTS OF A MOUNT ASSEMBLY INCLUDING A CERAMIC WAFER HAVING AN APERTURE THEREIN, A CONDUCTOR EXTENDING THROUGH SAID APERTURE, A FLANGE SUPPORTED ON SAID CONDUCTOR, AND AN ELECTRODE SUPPORTED ON SAID FLANGE, SAID METHOD COMPRISING PROVIDING SURFACES WETTABLE BY A BRAZING MATERIAL ON SAID CONDUCTOR AND THE WALL OF SAID APERTURE, ASSEMBLING SAID MOUNT ASSEMBLY PARTS INTO CONTACTING RELATION, APPLYING BRAZING MATERIAL ONLY TO SAID FLANGE, AND SUBJECTING SAID ASSEMBLY TO A BRAZING TEMPERATURE SUFFICIENT OT CAUSE SAID BRAZING MATERIAL TO MELT AND FLOW OVER SAID FLANGE AND SAID CONDUCTOR TO PROVIDE BRAZED JOINTS BETWEEN SAID ASSEMBLED PARTS INCLUDING A BRAZED JOINT BETWEEN THE WALLS OF SAID APERTURE AND SAID CONDUCTOR.
Claim 2
Dependent Claim
115 words
METHOD OF BRAZING TOGETHER PARTS OF A MOUNT ASSEMBLY INCLUDING A CERAMIC WAFER HAVING AN APERTURE THEREIN, A CONDUCTOR EXTENDING THROUGH SAID APERTURE, A FLANGE SUPPORTED ON SAID CONDUCTOR, AND AN ELECTRODE SUPPORTED ON SAID FLANGE, SAID METHOD COMPRISING PROVIDING SURFACES WETTABLE BY A BRAZING MATERIAL ON SAID CONDUCTOR AND THE WALL OF SAID APERTURE, ASSEMBLING SAID MOUNT ASSEMBLY PARTS INTO CONTACTING RELATION, APPLYING BRAZING MATERIAL ONLY TO SAID FLANGE, AND SUBJECTING SAID ASSEMBLY TO A BRAZING TEMPERATURE SUFFICIENT OT CAUSE SAID BRAZING MATERIAL TO MELT AND FLOW OVER SAID FLANGE AND SAID CONDUCTOR TO PROVIDE BRAZED JOINTS BETWEEN SAID ASSEMBLED PARTS INCLUDING A BRAZED JOINT BETWEEN THE WALLS OF SAID APERTURE AND SAID CONDUCTOR.
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |