Patent US3370874A successfully refreshed from Google Patents.
US3370874A
Expired / Lapsed
US
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Hermetic metal-to-glass seal and application thereof
Assignee: Isotronics Inc
•
Filing: 1966-07-21
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Granted: 1968-02-27
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Expires: 1986-07-21
Abstract
No abstract record available.
Inventors
- 👤 Jeremy D Scherer
- 👤 William F Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:13
CPC Classifications
C; C03; C03C; C03C29/00; H; H01; H01G; H01G9/00; H01G9/004; H01G9/08; H01G9/10; Y; Y10; Y10S; Y10S206/00; Y10S206/82; Y10S228/00; Y10S228/903; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T403/00; Y10T403/21; Y10T403/40; Y10T403/47; Y10T403/477
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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |