Patent US3359964A successfully refreshed from Google Patents.
US3359964A
Expired / Lapsed
US
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Floor-type radiant space heater
Assignee: United States Steel Corp
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Filing: 1965-11-12
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Granted: 1967-12-26
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Expires: 1985-11-12
Abstract
No abstract record available.
Inventors
- 👤 Sr Charles G Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:17
CPC Classifications
F; F24; F24C; F24C1/00; F24C3/00; F24C3/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1978177A
Cited
US880710A
Cited
US1368067A
Cited
US1725974A
Cited
US1948064A
Cited
US2348901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |