US2901866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bending glass
Assignee: PPG Industries Inc
•
Filing: 1956-06-15
•
Granted: 1959-09-01
•
Expires: 1976-06-15
Abstract
No abstract record available.
Inventors
- 👤 Harold E Mckelvey
- 👤 David H Doehlert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:35
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/025; C03B23/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US682570A
Cited
US760959A
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US2003383A
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US1999558A
Cited
US2330349A
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US2500278A
Cited
US2674067A
Cited
US2554572A
Cited
US2518951A
Cited
US2695476A
Cited
US2691854A
Cited
US2683334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |