Patent US3064880A successfully refreshed from Google Patents.
US3064880A
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US
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Sealing arrangement for rotary mechanism
Assignee: Audi AG
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Filing: 1958-09-16
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Granted: 1962-11-20
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Expires: 1978-09-16
Abstract
No abstract record available.
Inventors
- 👤 Wankel Felix
- 👤 Froede Walter
- 👤 Hoeppner Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:58
CPC Classifications
F; F01; F01C; F01C19/00; F01C19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US367873A
Cited
US914627A
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US1799294A
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US1984692A
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US1935503A
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US2550180A
Cited
US2722201A
Cited
US2880045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |