US2149133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining glass to porous ceramic material by weld
Assignee: Individual
•
Filing: 1937-10-19
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Granted: 1939-02-28
•
Expires: 1957-10-19
Abstract
No abstract record available.
Inventors
- 👤 Byron E Cohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:33
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/04; C04B37/042; C04B37/045; H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/24; C04B2237/00; C04B2237/02; C04B2237/10; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/341; C04B2237/343; C04B2237/36; C04B2237/365; C04B2237/50; C04B2237/76; C04B2237/765; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0038; Y; Y10; Y10S; Y10S285/00; Y10S285/911; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-02-27 | 1942-08-29 | 1943-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-27 | 1946-08-29 | 1947-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-27 | 1950-08-29 | 1951-02-28 | $7700.00 | Window Closed / Lapsed |