US2575400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankcase breather and oil filler pipe assembly
Assignee: Individual
•
Filing: 1947-05-26
•
Granted: 1951-11-20
•
Expires: 1967-05-26
Abstract
No abstract record available.
Inventors
- 👤 William C Shirk
- 👤 Julius A Jacobsen
- 👤 Charles H Shirk
- 👤 Raymond C Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:12
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/04; F01M13/00; F01M13/0033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1640291A
Cited
US1929017A
Cited
US2179229A
Cited
US2243083A
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US2314573A
Cited
US2389140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |