Patent US2607532A successfully refreshed from Google Patents.
US2607532A
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US
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Temperature control for air blending heating systems
Assignee: Vapor Heating Corp
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Filing: 1948-06-17
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Granted: 1952-08-19
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Expires: 1968-06-17
Abstract
No abstract record available.
Inventors
- 👤 Timothy J Lehane
- 👤 Edward W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:04
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/10; F24D19/1084; F24D5/00; F24D5/02; G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/27539
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2171803A
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US2138505A
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US2249223A
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GB526986A
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US2284764A
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US2328472A
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US2382073A
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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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |