Patent US2853872A successfully refreshed from Google Patents.
US2853872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory brick
Assignee: EJ Lavino and Co
•
Filing: 1955-03-14
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Granted: 1958-09-30
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Expires: 1975-03-14
Abstract
No abstract record available.
Inventors
- 👤 Samuel Donald Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:08
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/04; F27D1/06; F27D1/08; B; B28; B28B; B28B23/00; B28B23/0018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US310088A
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US2736187A
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US833455A
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US1576021A
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US1672524A
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US1943036A
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US2216813A
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US2256272A
Cited
US2336366A
Cited
FR1021415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |