US3412841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transferring sheets
Assignee: PPG Industries Inc
•
Filing: 1967-01-27
•
Granted: 1968-11-26
•
Expires: 1987-01-27
Abstract
No abstract record available.
Inventors
- 👤 Couch Paul
- 👤 Richard N Pytel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:32
CPC Classifications
C; C03; C03B; C03B35/00; C03B35/14; C03B35/20; B; B65; B65G; B65G49/00; B65G49/05; B65G49/06; B65G49/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US973422A
Cited
US1476050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |