Patent US2665475A successfully refreshed from Google Patents.
US2665475A
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US
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Highly refractory body
Assignee: Fansteel Inc
•
Filing: 1950-03-18
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Granted: 1954-01-12
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Expires: 1970-03-18
Abstract
No abstract record available.
Inventors
- 👤 Ivor E Campbell
- 👤 Bruce W Gonser
- 👤 Carroll F Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/04; C23; C23C; C23C10/00; C23C10/06; C23C10/08; C23C10/28; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12674; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1718563A
Cited
US1853370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |