US2536608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion liquid heating apparatus and method
Assignee: CM Kemp Manufacturing Co
•
Filing: 1945-08-04
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Granted: 1951-01-02
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Expires: 1965-08-04
Abstract
No abstract record available.
Inventors
- 👤 Kemp William Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:13
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/22; F22B1/26; F22B1/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1313947A
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US1247905A
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US1371876A
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US1716433A
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GB392747A
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US2233675A
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US2185594A
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US2118479A
Cited
US2204051A
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US2358302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |