Patent US3955774A successfully refreshed from Google Patents.
Patent US1828767A successfully refreshed from Google Patents.
US1828767A
Expired / Lapsed
US
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Process of glazing refractory articles
Assignee: ELECTRO REFRACTORIES Corp
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Filing: 1928-10-03
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Granted: 1931-10-27
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Expires: 1948-10-03
Abstract
No abstract record available.
Inventors
- 👤 Grant S Diamond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:08
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/4505; C04B41/80; C04B41/81
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) | 1934-10-26 | 1935-04-27 | 1935-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-26 | 1939-04-27 | 1939-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-26 | 1943-04-27 | 1943-10-27 | $7700.00 | Window Closed / Lapsed |