US2957236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming hermetic seals by pressure welding metal parts
Assignee: EMI Ltd
•
Filing: 1955-06-27
•
Granted: 1960-10-25
•
Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Kreuchen Karl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:03
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/02; F16L13/0281; B; B23; B23K; B23K20/00; B23K20/02; F16J; F16J15/00; F16J15/02; H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/28; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0044; Y; Y10; Y10S; Y10S220/00; Y10S220/29; Y10S285/00; Y10S285/911; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918
Claims Analysis
Total Claims: 0
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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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |