US2611599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for enclosed spaces
Assignee: JET HEET Inc
•
Filing: 1948-05-18
•
Granted: 1952-09-23
•
Expires: 1968-05-18
Abstract
No abstract record available.
Inventors
- 👤 Calvin D Maccracken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:12
CPC Classifications
A; A24; A24B; A24B1/00; A24B1/02; F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0488; F26; F26B; F26B21/00; F26B21/50; F26B21/55; F26B2200/00; F26B2200/22; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2361643A
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US1513598A
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US1573406A
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US1728053A
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US1943053A
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US2110209A
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US2072731A
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US2095186A
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US2082289A
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US2510645A
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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) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |