US3023341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube
Assignee: Individual
•
Filing: 1959-05-22
•
Granted: 1962-02-27
•
Expires: 1979-05-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Jackson W Kendall
- 👤 Leland G Perry
- 👤 Raymond H Hardenbergh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:29
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN ELECTRON TUBE COMPRISING A FIRST SECTION CARRYING A CATHODE AND A SECOND SECTION HAVING ANOTHER ELECTRODE, A CYLINDRICAL CERAMIC ENVELOPE PORTION FORMING PART OF THE ENVELOPE FOR SAID FIRST SECTION, A METALLIC LEAD-IN RING SECURED TO ONE END OF SAID ENVELOPE PORTION AND PRESENTING AN OUTWARDLY FACING PLANE SURFACE, MEANS SECURED TO SAID METALLIC LEAD-IN RING FOR SUPPORTING A CATHODE WITHIN SAID CERAMIC CYLINDER, SAID CATHODE HAVING A CATHODE EMITTING SURFACE COPLANAR WITH SAID SURFACE OF SAID METALLIC LEAD-IN RING, A SECOND CYLINDRICAL CERAMIC ENVELOPE PORTION FORMING PART OF THE ENVELOPE FOR SAID SECOND SECTION,
Claim 2
Dependent Claim
96 words
AN ELECTRON TUBE COMPRISING A FIRST SECTION CARRYING A CATHODE AND A SECOND SECTION HAVING ANOTHER ELECTRODE, A CYLINDRICAL CERAMIC ENVELOPE PORTION FORMING PART OF THE ENVELOPE FOR SAID FIRST SECTION, A METALLIC LEAD-IN RING SECURED TO ONE END OF SAID ENVELOPE PORTION AND PRESENTING AN OUTWARDLY FACING PLANE SURFACE, MEANS SECURED TO SAID METALLIC LEAD-IN RING FOR SUPPORTING A CATHODE WITHIN SAID CERAMIC CYLINDER, SAID CATHODE HAVING A CATHODE EMITTING SURFACE COPLANAR WITH SAID SURFACE OF SAID METALLIC LEAD-IN RING, A SECOND CYLINDRICAL CERAMIC ENVELOPE PORTION FORMING PART OF THE ENVELOPE FOR SAID SECOND SECTION,
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) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |