Patent US1915104A successfully refreshed from Google Patents.
US1915104A
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US
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Cylinder head cooling system
Assignee: BALDWIN SOUTHWARK CORP
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Filing: 1930-11-20
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Granted: 1933-06-20
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Expires: 1950-11-20
Abstract
No abstract record available.
Inventors
- 👤 Erwin F Ruehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:18
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/26; F02F1/36; F02F1/40; F01; F01P; F01P3/00; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-06-19 | 1936-12-19 | 1937-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-06-19 | 1940-12-19 | 1941-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-06-19 | 1944-12-19 | 1945-06-20 | $7700.00 | Window Closed / Lapsed |