Patent US3428475A successfully refreshed from Google Patents.
US3428475A
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US
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High strength glass and method for making the same
Assignee: Teeg Research Inc
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Filing: 1966-11-17
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Granted: 1969-02-18
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Expires: 1986-11-17
Abstract
No abstract record available.
Inventors
- 👤 Robert O Teeg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:24
CPC Classifications
C; C03; C03C; C03C15/00; C03B; C03B23/00; C03B23/20; C03B23/203; C03B23/207; C03C17/00; C03C17/02; Y; Y10; Y10S; Y10S65/00; Y10S65/15; Y10T; Y10T428/00; Y10T428/31; Y10T428/315
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |