Patent US1414008A successfully refreshed from Google Patents.
US1414008A
Expired / Lapsed
US
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Stirring molten glass in continuous tank furnaces
Assignee: LIBBEYOWENS SHEET GLASS Co
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Filing: 1920-11-01
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Granted: 1922-04-25
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Expires: 1940-11-01
Abstract
No abstract record available.
Inventors
- 👤 Wilbur F Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:12
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/187
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) | 1925-04-24 | 1925-10-24 | 1926-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-04-24 | 1929-10-24 | 1930-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-04-24 | 1933-10-24 | 1934-04-25 | $7700.00 | Window Closed / Lapsed |