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Patent US2531640A successfully refreshed from Google Patents.
US2531640A
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US
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Apparatus for turning glass sheets
Assignee: Libbey Owens Ford Glass Co
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Filing: 1947-12-26
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Granted: 1950-11-28
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Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Edward C Oberstar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:51
CPC Classifications
B; B65; B65G; B65G49/00; B65G49/05; B65G49/06; B65G49/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US935848A
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US1390853A
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US1623393A
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US1687985A
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US1859501A
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US1967683A
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US2341128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |