US2470509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making heated window glass
Assignee: PPG Industries Inc
•
Filing: 1945-05-02
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Granted: 1949-05-17
•
Expires: 1965-05-02
Abstract
No abstract record available.
Inventors
- 👤 Herman R Marini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:06
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10376; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T428/00; Y10T428/24; Y10T428/24132; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163; Y10T428/31678; Y10T428/31688
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1223583A
Cited
US1741562A
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US2184485A
Cited
US2156680A
Cited
US2222742A
Cited
US2268266A
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 |