US2690577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston cleaning machine
Assignee: Individual
•
Filing: 1948-11-24
•
Granted: 1954-10-05
•
Expires: 1968-11-24
Abstract
No abstract record available.
Inventors
- 👤 William A Coninx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:15
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1454031A
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FR553774A
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FR625946A
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US1779618A
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US1770201A
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US1880875A
Cited
US2078416A
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US2376945A
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US2454924A
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US2478607A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |