US3743495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing float glass
Assignee: Pilkington North America Inc
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Filing: 1971-04-12
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Granted: 1973-07-03
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Expires: 1991-04-12
Abstract
Abstract THIS INVENTION PERTAINS TO TREATMENT OF A BUOYANT BODY OF MOLTEN GLASS AT THE ENTRANCE END OF A FLOAT GLASS FORMING APPARATUS, AND INVOLVES THE USE OF A SPACER TILE PROVIDED WITH A GLASS CONTACTING SURFACE THAT WILL NOT STICK TO THE MOLTEN GLASS.
Inventors
- 👤 F Swillinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/16
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |