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Patent US3381156A successfully refreshed from Google Patents.
US3381156A
Expired / Lapsed
US
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Electrodes for cathode ray tubes with abutted ends meeting in a seam
Assignee: Kentucky Electronics Inc
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Filing: 1965-12-30
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Granted: 1968-04-30
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Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jay H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:11
CPC Classifications
H; H01; H01J; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/0022; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2017002A
Cited
US2317198A
Cited
US2540621A
Cited
GB668707A
Cited
US2879421A
Cited
US2879432A
Cited
DE1119057B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |