US3038987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-cooled radiant-heat furnace
Assignee: ARC ENGINEERING Corp
•
Filing: 1959-09-14
•
Granted: 1962-06-12
•
Expires: 1979-09-14
Abstract
No abstract record available.
Inventors
- 👤 Dow Walter Orville
- 👤 Albert R Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:24
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/02; B; B23; B23K; B23K3/00; B23K3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2981819A
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US664866A
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US1181283A
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US1231196A
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US1598779A
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US1499317A
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US1438936A
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US1686100A
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US1830318A
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GB484199A
Cited
US2469253A
Cited
US2721736A
Cited
US2844699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |