US3125698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Karl-birger persson
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
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Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:36
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/123; C04B2237/124; C04B2237/125; C04B2237/126; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/341; C04B2237/40; C04B2237/50; C04B2237/52; C04B2237/62; C04B2237/64; C04B2237/70; C04B2237/708; C04B2237/76; C04B2237/765; C04B2237/80; C04B2237/84; C04B2237/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
AN ELECTRON TUBE, COMPRISING AN ENVELOPE, AN ELECTRODE WITHIN SAID ENVELOPE, A METALLIC TERMINAL MEMBER HAVING PORTIONS THEREOF EXTENDING WITHIN AND OUTSIDE SAID ENVELOPE AND CONNECTED TO SAID ELECTRODE, AN ANNULAR CERAMIC MEMBER FORMING PART OF SAID ENVELOPE AND HAVING A SUBSTANTIALLY PLANAR ANNULAR SURFACE, RIGID SPACING MEANS EXTENDING FROM SAID TERMINAL MEMBER AND HAVING AN ANNULAR SUBSTANTIALLY PLANAR SURFACE PRESENTED TOWARD SAID CERAMIC MEMBER SURFACE, AN ANNULAR THIN WALLED METALLIC MEMBER INTERPOSED BETWEEN SAID MUTALLY PRESENTED SURFACES AND SEALED ALONG ONE SURFACE INTERMEDIATE ITS PERIPHERIES TO SAID CERAMIC MEMBER SURFACE, ONE PERIPHERAL PORITON OF SAID THIN WALLED METALLIC MEMBER FORMING A PART OF SAID ENVELOPE AND BEING SEALED TO SAID TERMINAL MEMBER, ANOTHER PERIPHERAL PORTION OF SAID THIN WALLED MEMBER EXTENDING INSIDE SAID ENVELOPE AND BEING SEALED TO SAIDA TERMINAL MEMBER, AND SAID SURFACE OF SAID RIGID SPACING MEANS ABUTTING THE SURFACE OF SAID THIN WALLED MEMBER OPPOSITE THE SURFACE PORTION THEREOF SEALED TO SAID CERAMIC MEMBER.
Claim 2
Dependent Claim
158 words
AN ELECTRON TUBE, COMPRISING AN ENVELOPE, AN ELECTRODE WITHIN SAID ENVELOPE, A METALLIC TERMINAL MEMBER HAVING PORTIONS THEREOF EXTENDING WITHIN AND OUTSIDE SAID ENVELOPE AND CONNECTED TO SAID ELECTRODE, AN ANNULAR CERAMIC MEMBER FORMING PART OF SAID ENVELOPE AND HAVING A SUBSTANTIALLY PLANAR ANNULAR SURFACE, RIGID SPACING MEANS EXTENDING FROM SAID TERMINAL MEMBER AND HAVING AN ANNULAR SUBSTANTIALLY PLANAR SURFACE PRESENTED TOWARD SAID CERAMIC MEMBER SURFACE, AN ANNULAR THIN WALLED METALLIC MEMBER INTERPOSED BETWEEN SAID MUTALLY PRESENTED SURFACES AND SEALED ALONG ONE SURFACE INTERMEDIATE ITS PERIPHERIES TO SAID CERAMIC MEMBER SURFACE, ONE PERIPHERAL PORITON OF SAID THIN WALLED METALLIC MEMBER FORMING A PART OF SAID ENVELOPE AND BEING SEALED TO SAID TERMINAL MEMBER, ANOTHER PERIPHERAL PORTION OF SAID THIN WALLED MEMBER EXTENDING INSIDE SAID ENVELOPE AND BEING SEALED TO SAIDA TERMINAL MEMBER, AND SAID SURFACE OF SAID RIGID SPACING MEANS ABUTTING THE SURFACE OF SAID THIN WALLED MEMBER OPPOSITE THE SURFACE PORTION THEREOF SEALED TO SAID CERAMIC MEMBER.
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) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |