US2964878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming openings in multiple sheet glazing units
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1955-05-04
•
Granted: 1960-12-20
•
Expires: 1975-05-04
Abstract
No abstract record available.
Inventors
- 👤 Eldwin C Montgomery
- 👤 Harry N Dean
- 👤 Charles H Cowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:56
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/20; C03B23/24; C03B23/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1179155A
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US1448351A
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US2116297A
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US2193393A
Cited
US2389360A
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US2761248A
Cited
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 |