Patent US3425716A successfully refreshed from Google Patents.
US3425716A
Expired / Lapsed
US
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Glass union
Assignee: FRITZ R BLAU
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Filing: 1967-03-16
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Granted: 1969-02-04
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Expires: 1987-03-16
Abstract
No abstract record available.
Inventors
- 👤 Fritz R Blau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:18
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/02; F16L23/036; F16L49/00; F16L49/08; Y; Y10; Y10S; Y10S277/00; Y10S277/91
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) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |