Patent US2104841A successfully refreshed from Google Patents.
US2104841A
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Refractory articles
Assignee: LAVA CRUCIBLE Co
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Filing: 1936-07-11
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Granted: 1938-01-11
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Expires: 1956-07-11
Abstract
No abstract record available.
Inventors
- 👤 Harold E White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:12
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/52; C04B35/528; C04B35/532; Y; Y10; Y10S; Y10S264/00; Y10S264/36; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/939; Y10S428/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-01-10 | 1941-07-12 | 1942-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-10 | 1945-07-12 | 1946-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-10 | 1949-07-12 | 1950-01-11 | $7700.00 | Window Closed / Lapsed |