Patent US1754940A successfully refreshed from Google Patents.
Patent US3368098A successfully refreshed from Google Patents.
US3368098A
Expired / Lapsed
US
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Shadow mask welded to frame at twelve points
Assignee: RCA Corp
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Filing: 1965-03-01
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Granted: 1968-02-06
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Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Robert C Demmy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:29
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J29/073; F; F01; F01K; F01K17/00; F01K17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA633645A
Cited
US2625734A
Cited
US2728008A
Cited
US2806162A
Cited
US2846608A
Cited
US2897392A
Cited
US3038096A
Cited
US2922063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |