US2819936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston, especially for internal combustion engines
Assignee: FRIED KRUPP MOTOREN und KRAFTW
•
Filing: 1955-07-20
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Granted: 1958-01-14
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Expires: 1975-07-20
Abstract
No abstract record available.
Inventors
- 👤 Cambeis Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:10
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/06; F01P3/08; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US364627A
Cited
US1138892A
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US1339760A
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US1474325A
Cited
US1545930A
Cited
US2012874A
Cited
US2107795A
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US2563371A
Cited
US2687931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |