US2470461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing glass
Assignee: PPG Industries Inc
•
Filing: 1944-04-19
•
Granted: 1949-05-17
•
Expires: 1964-04-19
Abstract
No abstract record available.
Inventors
- 👤 Lloyd V Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:13
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10807; B32B17/10889; B32B17/10009; B32B17/10018; B32B17/10073; B32B17/10981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1716350A
Cited
US2021180A
Cited
US1992976A
Cited
US2314325A
Cited
US2357537A
Cited
US2377849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |