US2673423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for surfacing glass
Assignee: PPG Industries Inc
•
Filing: 1951-03-14
•
Granted: 1954-03-30
•
Expires: 1971-03-14
Abstract
No abstract record available.
Inventors
- 👤 Hoyet Eugene
- 👤 Frank F Painter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:00
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/20; B24B7/22; B24B7/24; B24B7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1474672A
Cited
GB221029A
Cited
US1620021A
Cited
US1729498A
Cited
US1800743A
Cited
US1803752A
Cited
US1955128A
Cited
GB419747A
Cited
US2131862A
Cited
US2264177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |