Patent US2467730A successfully refreshed from Google Patents.
US2467730A
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US
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Vacuum seal for wave guides
Assignee: Westinghouse Electric Corp
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Filing: 1943-11-10
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Granted: 1949-04-19
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Expires: 1963-11-10
Abstract
No abstract record available.
Inventors
- 👤 John W Coltman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:20
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/08; H01J; H01J5/00; H01J5/20; H01J2893/00; H01J2893/0033; H01J2893/0037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172548A
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US2223082A
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US2167431A
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US2200023A
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US2394398A
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US2404085A
Cited
US2407318A
Cited
US2407069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |