US2964809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple glass sheet glazing unit and method of fabrication
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1957-11-13
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Granted: 1960-12-20
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Expires: 1977-11-13
Abstract
No abstract record available.
Inventors
- 👤 James D Gwyn
- 👤 Henry F Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:03
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/677
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |