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US2742274A
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Assignee: Selas Corp of America
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Filing: 1952-05-10
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Granted: 1956-04-17
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Expires: 1972-05-10
Abstract
No abstract record available.
Inventors
- 👤 Torsten F A Edvar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:10
CPC Classifications
B; B41; B41F; B41F23/00; B41F23/04; B41F23/0403; B41F23/0423; B41F23/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US378266A
Cited
US2371161A
Cited
US1676176A
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GB386412A
Cited
US2015699A
Cited
US2119261A
Cited
US2325950A
Cited
US2409431A
Cited
US2571815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |