US2844919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quartz-to-metal foil press seal
Assignee: General Electric Co
•
Filing: 1952-01-19
•
Granted: 1958-07-29
•
Expires: 1972-01-19
Abstract
No abstract record available.
Inventors
- 👤 Power Ernest Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:25
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/32; H01J9/323; H01J9/326; Y; Y10; Y10T; Y10T403/00; Y10T403/49; Y10T403/4966
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1933323A
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US2251062A
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US2273488A
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US2632033A
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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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |