Patent US2483940A successfully refreshed from Google Patents.
US2483940A
Expired / Lapsed
US
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Method of making lead-in seals
Assignee: General Electric Co
•
Filing: 1946-12-03
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Granted: 1949-10-04
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Expires: 1966-12-03
Abstract
No abstract record available.
Inventors
- 👤 William J Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:52
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/32; H01J9/323; H01J9/326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2190302A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |