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US2696875A
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Assignee: Selas Corp of America
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Filing: 1948-11-18
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Granted: 1954-12-14
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Expires: 1968-11-18
Abstract
No abstract record available.
Inventors
- 👤 James B Henwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:50
CPC Classifications
F; F23; F23Q; F23Q9/00; F23Q9/02; F23Q9/04; F23Q9/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US179791A
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US409727A
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US590586A
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US791002A
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US2212875A
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DE679702C
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US2460016A
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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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |