US3582306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass feeders
Assignee: Corning Glass Works
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Filing: 1968-11-04
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Granted: 1971-06-01
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Expires: 1988-11-04
Abstract
Abstract A FEED CONSTRUCTION HAVING A CENTRAL GLASS DELIVERY CONTAINER SURROUNDED BY AN OUTER GLASS DELIVERY CHAMBER WHICH ARE IN COMMUNICATION ALONG A DELIVERY PASSAGE AT THEIR LOWER EXTENTS, IS PROVIDED FOR FORMING STRATIFIED OR COMPOSITE SHEETS OR RIBBONS OF VITREOUS MATERIAL WITHIN A CONFINED SPACE DIRECTLY FROM SEPARATE SUPPLIES OF MOLTEN GLASS.
Inventors
- 👤 James W Giffen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:17
CPC Classifications
C; C03; C03B; C03B17/00; C03B17/02
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 |