Patent US3050913A successfully refreshed from Google Patents.
US3050913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass manufacture
Assignee: PPG Industries Inc
•
Filing: 1959-08-11
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Granted: 1962-08-28
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Expires: 1979-08-11
Abstract
No abstract record available.
Inventors
- 👤 Robert E Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:21
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/02; B24B7/00; B24B7/20; B24B7/22; B24B7/24; B24B7/26
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |