Patent US3582304A successfully refreshed from Google Patents.
US3582304A
Expired / Lapsed
US
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Forming articles from sheet glass
Assignee: LEWIS L BOGNAR
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Filing: 1967-10-05
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Granted: 1971-06-01
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Expires: 1987-10-05
Abstract
Abstract INTRICATE ARTICLES ARE FORMED FROM SHEET GLASS BY RAPIDLY HEATING THE SHEET ABOVE ITS SOFTENING TEMPERATURE WHILE SUSPENDED IN A VERTICAL PLANT FROM ABOVE, AND QUICKLY PRESS-FORMING AN ARTICLE BEFORE DETRIMENTAL ATTENUATION OCCURS WITH FORMING MEMBERS HEATED TO ABOUT THE ANNEALING TEMPERATURE OF THE GLASS, SO AS TO FORM AN ARTICLE HAVING A WALL THICKNESS SUBSTANTIALLY THE SAME AS THE THICKNESS OF THE ORIGINAL GLASS SHEET.
Inventors
- 👤 Lewis L Bognar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:12
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/03; C03B23/0307; C03B23/0302; C03B23/0305; C03B23/031; C03B35/00; C03B35/14; C03B35/20
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |