US2464112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder head for superheated steam engines
Assignee: Individual
•
Filing: 1945-08-17
•
Granted: 1949-03-08
•
Expires: 1965-08-17
Abstract
No abstract record available.
Inventors
- 👤 Harry M Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:34
CPC Classifications
F; F01; F01B; F01B31/00; F01B31/08; F01L; F01L31/00; F01L31/08; F01L31/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE283668C
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US198391A
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GB190824454A
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US1155451A
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US1107204A
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FR707849A
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US1864384A
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US2194000A
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US2295521A
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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) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |