US2598893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing flat glass
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1945-08-20
•
Granted: 1952-06-03
•
Expires: 1965-08-20
Abstract
No abstract record available.
Inventors
- 👤 John L Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:39
CPC Classifications
C; C03; C03B; C03B15/00; C03B15/02; C03B15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1657214A
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US1657212A
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US2158669A
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US2278328A
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US2246053A
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US2387886A
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US2444731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |