US2647774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum seal
Assignee: General Electric Co
•
Filing: 1949-10-05
•
Granted: 1953-08-04
•
Expires: 1969-10-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Sterling P Newberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/30; H01J2893/00; H01J2893/0033; H01J2893/0046; Y; Y10; Y10S; Y10S277/00; Y10S277/913; Y10S74/00; Y10S74/10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/18128; Y10T74/18136
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US362355A
Cited
US1336030A
Cited
US1355318A
Cited
US1697814A
Cited
GB499603A
Cited
US2188855A
Cited
US2399550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |