US3467509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making glass to metal seals
Assignee: Zenith Electronics LLC
•
Filing: 1967-04-06
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Granted: 1969-09-16
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Expires: 1987-04-06
Abstract
No abstract record available.
Inventors
- 👤 Leigh Curtis Foster
- 👤 John P Lindley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:42
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/0054; C03C8/00; C03C8/24; H; H01; H01J; H01J5/00; H01J5/32; H01J5/40; H01J2893/00; H01J2893/0033; H01J2893/0034; H01J2893/0035
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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |