US2650683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-to-ceramic seal
Assignee: Collins Radio Co
•
Filing: 1949-11-03
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Granted: 1953-09-01
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Expires: 1969-11-03
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Mcphee
- 👤 Harry W Soderstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:57
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/10; C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; H; H01; H01J; H01J5/00; H01J5/20; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/123; C04B2237/30; C04B2237/32; C04B2237/40; C04B2237/50; C04B2237/62; C04B2237/64; C04B2237/76; C04B2237/765; C04B2237/80; C04B2237/84; C04B2237/88; H01J2893/00; H01J2893/0033; H01J2893/0037; Y; Y10; Y10T; Y10T403/00; Y10T403/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |