Patent US3406864A successfully refreshed from Google Patents.
US3406864A
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US
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Seal for pressure vessels
Assignee: Quanten Ges fur Zersta GmbH
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Filing: 1966-08-08
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Granted: 1968-10-22
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Expires: 1986-08-08
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:09
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J15/00; F16J15/16; F16J15/40; F16L; F16L37/00; F16L37/02; F16L55/00; F16L55/10; F16L55/11; F16L55/1116
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3182850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |