US3048217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chamber burner for producing glass fibers
Assignee: PPG Industries Inc
•
Filing: 1956-11-21
•
Granted: 1962-08-07
•
Expires: 1976-11-21
Abstract
No abstract record available.
Inventors
- 👤 Donald W Denniston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:09
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/06; C03B37/065; F; F23; F23C; F23C3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE600198C
Cited
US2489244A
Cited
US2460085A
Cited
US2499218A
Cited
US2663903A
Cited
US2836409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |