US2272747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass to metal seal
Assignee: General Electric Co
•
Filing: 1939-04-07
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Granted: 1942-02-10
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Expires: 1959-04-07
Abstract
No abstract record available.
Inventors
- 👤 Albert W Hull
- 👤 Navias Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:19
CPC Classifications
C; C03; C03C; C03C29/00; C03C27/00; C03C27/02; C03C3/00; C03C3/04; C03C3/076; C03C3/102; C03C3/108; C03C3/11; C03C3/112; C03C3/115; H; H01; H01J; H01J19/00; H01J19/42; H01J19/50; H01J5/00; H01J5/32; H01J5/40; H01J7/00; H01J7/14; H01J7/18; H01J7/186; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; H01J2893/0008; H01J2893/0033; H01J2893/0034; H01J2893/0035; Y; Y10; Y10S; Y10S228/00; Y10S228/902; Y10S228/903
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) | 1945-02-09 | 1945-08-11 | 1946-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-09 | 1949-08-11 | 1950-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-09 | 1953-08-11 | 1954-02-10 | $7700.00 | Window Closed / Lapsed |