Patent US2494915A successfully refreshed from Google Patents.
US2494915A
Expired / Lapsed
US
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Method of gas-filling and sealing vessels
Assignee: General Electric Co
•
Filing: 1946-04-24
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Granted: 1950-01-17
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Expires: 1966-04-24
Abstract
No abstract record available.
Inventors
- 👤 Poel Johannes Marinus Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:10
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/40; Y; Y10; Y10S; Y10S53/00; Y10S53/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2014471A
Cited
GB428802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |