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US3429581A
Expired / Lapsed
US
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Sealing connection
Assignee: Individual
•
Filing: 1965-05-12
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Granted: 1969-02-25
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Expires: 1985-05-12
Abstract
No abstract record available.
Inventors
- 👤 Fritz Drexler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:36
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0881; B; B28; B28B; B28B7/00; B28B7/16; B28B7/18; B28B7/186; F16J15/04; F16B; F16B2200/00; F16B2200/60; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32549; Y10T403/49; Y10T403/4966; Y10T403/4983; Y10T403/70; Y10T403/7045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2238462A
Cited
US2511134A
Cited
BE504698A
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US2746486A
Cited
DE952482C
Cited
DE1004002B
Cited
FR1272997A
Cited
US3264012A
Cited
US3159302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |