Patent US3198979A successfully refreshed from Google Patents.
US3198979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow wave circuit with flexible support
Assignee: SFD LAB Inc
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Filing: 1962-07-16
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Granted: 1965-08-03
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Expires: 1982-07-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Sldoti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:33
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
AN ELECTRON DISCHARGE DEVICE COMPRISING, IN COMBINATION, (A) FIRST EXTENDED ELECTRON EMITTING ELECTRODE MEANS, (B) SECOND EXTENDED ELECTRODE MEANS BEING SPACED FROM SAID FIRST ELECTRODE MEANS FOR FORMING AN INTERACTION REGION THEREBETWEEN, (C) AN ARRAY OF AXIALLY ALIGNED CONDUCTING ELEMENTS CONNECTED TO SAID SECOND ELECTRODE MEANS AND DISTRIBUTED ALONG THE LENGTH THEREOF, (D) FIRST AND SECOND SPACED APART SHORTING MEANS CONNECTING THE ENDS OF SAID CONDUCTING ELEMENTS, SAID SECOND SHORTING MEANS BEING A FLEXIBLE MEMBER, THIN WITH RESPECT TO SAID FIRST SHORTING 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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |