US3254251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube gun having nested electrode assembly
Assignee: RCA Corp
•
Filing: 1962-07-06
•
Granted: 1966-05-31
•
Expires: 1982-07-06
Abstract
No abstract record available.
Inventors
- 👤 Hughes Richard Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:36
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/04; H01J29/46; H01J29/48; H01J29/485; H01J29/51; H01J29/70; H01J29/701; H01J29/702; H01J29/705; H01J29/707; H01J29/82; H01J3/00; H01J3/02; H01J3/027; H01J31/00; H01J31/08; H01J31/10; H01J31/20; H01J31/201; H01J31/203; H01J31/205; H01J31/50; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/18; H04N9/20; H01J2229/00; H01J2229/58; H01J2229/581; H01J2229/583; H01J2229/5835
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
A CATHODE ASSEMBLY COMPRISING A TUBULAR CATHODE SLEEVE HAVING AN ELECTRON EMISSIVE SURFACE AT ONE END AND A TUBULAR CATHODE SUPPORT SLEEVE OF LARGER DIAMETER THAN SAID CATHODE SLEEVE DISPOSED CONCENTRICALLY THEREWITH, SAID CATHODE SUPPORT SLEEVE BEING DIMPLED INWARDLY AT A PULARALITY OF CIRCUMFERENTIALLY SPACED POINTS AND FIXED TO SAID CATHODE SLEEVE THEREAT.
References Cited (Backward Citations)
US2436265A
Cited
US2849646A
Cited
US2888588A
Cited
US2752520A
Cited
US2886729A
Cited
US3024380A
Cited
US2861208A
Cited
US2778966A
Cited
US2808527A
Cited
US2897390A
Cited
US2847598A
Cited
US2898493A
Cited
US2914694A
Cited
US3004183A
Cited
US2991381A
Cited
US3085175A
Cited
US3128407A
Cited
US3145318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |