Patent US2598808A successfully refreshed from Google Patents.
US2598808A
Expired / Lapsed
US
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Heating apparatus and radiation relay therefor
Assignee: Individual
•
Filing: 1949-04-20
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Granted: 1952-06-03
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Expires: 1969-04-20
Abstract
No abstract record available.
Inventors
- 👤 Ledin Sven Harald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:31
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1433073A
Cited
US1205434A
Cited
US1461523A
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US1681421A
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US1829944A
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US1884256A
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US1853444A
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US1832761A
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US2154644A
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US2171957A
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US2185436A
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GB491714A
Cited
US2191640A
Cited
US2197746A
Cited
US2299533A
Cited
US2392065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |