Patent US2917812A successfully refreshed from Google Patents.
US2917812A
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Apparatus for assembling an electrode cage for electron discharge devices
Assignee: RCA Corp
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Filing: 1956-04-26
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Granted: 1959-12-22
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Expires: 1976-04-26
Abstract
No abstract record available.
Inventors
- 👤 Wolke Roy Karel
- 👤 Chase John Anthony
- 👤 Frank J Pilas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:00
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/42; H01J19/46; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; H01J2893/0006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR40860E
Cited
US2275058A
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US2321157A
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US2351276A
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US2336541A
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US2425127A
Cited
US2720055A
Cited
US2783674A
Cited
US2822712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |