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US2932921A
Expired / Lapsed
US
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Means for neutralizing current in glass withdrawn from electrically heated furnace
Assignee: OI Glass Inc
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Filing: 1957-04-19
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Granted: 1960-04-19
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Expires: 1977-04-19
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Augsburger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:29
CPC Classifications
C; C03; C03B; C03B7/00; C03B7/08; C03B7/094; C03B7/096; C03B7/098; C03B7/005; C03B7/01; C03B7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1999744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |