Patent US5013164A successfully refreshed from Google Patents.
Patent US3261677A successfully refreshed from Google Patents.
US3261677A
Expired / Lapsed
US
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Glass furnace having a refining chamber for the molten glass
Assignee: AGC Glass Europe SA
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Filing: 1963-01-02
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Granted: 1966-07-19
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Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 Plumat Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:16
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/225; C03B5/2257
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN A GLASS FURNACE HAVING A MELTING CHAMBER A THERMAL CONDITIONING CHAMBER, AND A REFINING CHAMBER POSITIONED BETWEEN THE OTHER TWO CHAMBERS, ALL CHAMBERS HAVING SEPARATE BASES AND A COEXTENSIVE ARCH, THE IMPROVEMENT IN COMBINATION THEREWITH COMPRISING SAID THERMAL CONDITIONING BASE BEING POSITIONED AT A SUBSTANTIALLY LOWER LEVEL THAN SAID REFINING CHAMBER BASE, A VERTICAL WALL CONNECTING THE BASES OF SAID REFINING AND THERMAL CONDITIONING CHAMBERS, A PARTITION EXTENDING VERTICALLY DOWNWARD FROM THE ARCH TO A POINT BELOW SAID REFINING CHAMBER BASE AND NEAR SAID CONDITIONING CHAMBER BASE, SAID PARTITION SPACED FROM SAID VERTICAL WALL TO FORM A
Claim 2
Dependent Claim
98 words
IN A GLASS FURNACE HAVING A MELTING CHAMBER A THERMAL CONDITIONING CHAMBER, AND A REFINING CHAMBER POSITIONED BETWEEN THE OTHER TWO CHAMBERS, ALL CHAMBERS HAVING SEPARATE BASES AND A COEXTENSIVE ARCH, THE IMPROVEMENT IN COMBINATION THEREWITH COMPRISING SAID THERMAL CONDITIONING BASE BEING POSITIONED AT A SUBSTANTIALLY LOWER LEVEL THAN SAID REFINING CHAMBER BASE, A VERTICAL WALL CONNECTING THE BASES OF SAID REFINING AND THERMAL CONDITIONING CHAMBERS, A PARTITION EXTENDING VERTICALLY DOWNWARD FROM THE ARCH TO A POINT BELOW SAID REFINING CHAMBER BASE AND NEAR SAID CONDITIONING CHAMBER BASE, SAID PARTITION SPACED FROM SAID VERTICAL WALL TO FORM A
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |