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US2725679A
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Apparatus for the rapid annealing of glass sheets in a continuous process
Assignee: Compagnies Reunies des Glaces et Verres Speciaux du Nord de la France
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Filing: 1953-03-27
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Granted: 1955-12-06
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Expires: 1973-03-27
Abstract
No abstract record available.
Inventors
- 👤 Long Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:19
CPC Classifications
C; C03; C03B; C03B25/00; C03B25/04; C03B25/10; C03B25/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2026781A
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US1999588A
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US2062836A
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US2553945A
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US2418489A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |