US3050813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a combined radiant heat fuel burner block and refractory cup
Assignee: Selas Corp of America
•
Filing: 1954-04-22
•
Granted: 1962-08-28
•
Expires: 1974-04-22
Abstract
No abstract record available.
Inventors
- 👤 Kniveton James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:36
CPC Classifications
B; B28; B28B; B28B19/00; B28B1/00; B28B1/002; B28B13/00; B28B13/04; B28B7/00; B28B7/34; B28B7/342; F; F23; F23M; F23M5/00; F23M5/02; F23M5/025; Y; Y10; Y10S; Y10S425/00; Y10S425/012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US865314A
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US1765572A
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US1500815A
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US1648149A
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US1898799A
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US1881228A
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FR716388A
Cited
US1995122A
Cited
US2287246A
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US2504451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |