US3243627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocathode on bveled end plate of electron tube
Assignee: RCA Corp
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Filing: 1962-12-21
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Granted: 1966-03-29
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Benjamin H Vine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:54
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/34; H01J2201/00; H01J2201/34; H01J2201/342; H01J2201/3421; H01J2201/3426
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
AN ELECTRON TUBE HAVING: (A) AN ELONGATED TUBULAR ENVELOPE, (B) A PLATE CLOSING ONE END OF SAID ENVELOPE, (C) SAID ONE END INCLUDING A BEVELED FIRST SURFACE PORTION AND A SECOND SURFACE PORTION LYING IN A PLANE NORMAL TO THE LONGITUDE AXIS OF SAID ENVELOPE, (D) SAID BEVELED FIRST PORTION AND AN ANNULAR PORTION OF SAID PLATE CO-EXTENSIVE WITH SAID BEVELED PORTION HAVING METALLIC COATINGS THEREON, (E) SAID SECOND PORTION BEING FREE FROM METALLIC COATING BONDED THERETO, AND
Claim 2
Dependent Claim
78 words
AN ELECTRON TUBE HAVING: (A) AN ELONGATED TUBULAR ENVELOPE, (B) A PLATE CLOSING ONE END OF SAID ENVELOPE, (C) SAID ONE END INCLUDING A BEVELED FIRST SURFACE PORTION AND A SECOND SURFACE PORTION LYING IN A PLANE NORMAL TO THE LONGITUDE AXIS OF SAID ENVELOPE, (D) SAID BEVELED FIRST PORTION AND AN ANNULAR PORTION OF SAID PLATE CO-EXTENSIVE WITH SAID BEVELED PORTION HAVING METALLIC COATINGS THEREON, (E) SAID SECOND PORTION BEING FREE FROM METALLIC COATING BONDED THERETO, AND
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |