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US2566041A
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Steam heating boiler control system
Assignee: New York Central Railroad Co
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Filing: 1947-09-26
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Granted: 1951-08-28
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Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 Lawrence C Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:35
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/10; F23D11/101; F23D11/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1316680A
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DE324330C
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US1684079A
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US1596147A
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US1772597A
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US1661450A
Cited
US2116943A
Cited
US2384420A
Cited
US2364489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |