Patent US2450130A successfully refreshed from Google Patents.
US2450130A
Expired / Lapsed
US
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Electrical device having glass-to-metal seal
Assignee: Varian Medical Systems Inc
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Filing: 1945-09-24
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Granted: 1948-09-28
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Expires: 1965-09-24
Abstract
No abstract record available.
Inventors
- 👤 Gordon Ronald
- 👤 Miller Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:21
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB249084A
Cited
US1692998A
Cited
US2062335A
Cited
GB379883A
Cited
US2071597A
Cited
US2219573A
Cited
US2414137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-28 | 1952-03-29 | 1952-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-28 | 1956-03-29 | 1956-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-28 | 1960-03-29 | 1960-09-28 | $7700.00 | Window Closed / Lapsed |