US2729523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston for internal combustion engines
Assignee: MAN AG
•
Filing: 1952-03-08
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Granted: 1956-01-03
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Expires: 1972-03-08
Abstract
No abstract record available.
Inventors
- 👤 Lassberg Dietrich Von
- 👤 Gebhart Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:51
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/0015; F02F3/0023; F16; F16J; F16J1/00; F16J1/10; F16J1/12; F05; F05C; F05C2201/00; F05C2201/04; F05C2201/0433; F05C2201/0448; F05C2251/00; F05C2251/04; F05C2251/042
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |