Patent US2447027A successfully refreshed from Google Patents.
US2447027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder liner
Assignee: Individual
•
Filing: 1944-01-13
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Granted: 1948-08-17
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Expires: 1964-01-13
Abstract
No abstract record available.
Inventors
- 👤 Jr William E Pielop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:21
CPC Classifications
F; F16; F16J; F16J10/00; F16J10/02; F16J10/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1529911A
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US1584843A
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US1737270A
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GB462708A
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US2143586A
Cited
US2108392A
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US2134250A
Cited
GB470999A
Cited
US2204626A
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US2234142A
Cited
US2324547A
Cited
US2279671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |