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US2590336A
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US
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Explosion-proof heater
Assignee: ELECTROMODE Corp
•
Filing: 1949-01-28
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Granted: 1952-03-25
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Expires: 1969-01-28
Abstract
No abstract record available.
Inventors
- 👤 Lowell R Mast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:21
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2335233A
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US1956617A
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US2109279A
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US2158477A
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US2240922A
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US2317426A
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US2313786A
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US2453875A
Cited
US2455839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |