US2840953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guide for glass bending molds
Assignee: PPG Industries Inc
•
Filing: 1951-12-14
•
Granted: 1958-07-01
•
Expires: 1971-12-14
Abstract
No abstract record available.
Inventors
- 👤 Lloyd V Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:27
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/025; C03B23/027; C03B2225/00; C03B2225/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2473860A
Cited
US2551606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |