Patent US2462020A successfully refreshed from Google Patents.
US2462020A
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US
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Method and means for sealing conductors to glass envelope walls
Assignee: Individual
•
Filing: 1945-07-03
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Granted: 1949-02-15
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Expires: 1965-07-03
Abstract
No abstract record available.
Inventors
- 👤 Palmer H Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:27
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; Y; Y10; Y10T; Y10T403/00; Y10T403/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1644744A
Cited
US1639575A
Cited
US1884665A
Cited
US2097073A
Cited
US2098080A
Cited
US2341920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-15 | 1952-08-16 | 1953-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-15 | 1956-08-16 | 1957-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-15 | 1960-08-16 | 1961-02-15 | $7700.00 | Window Closed / Lapsed |