US2491848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a glass blank
Assignee: General Electric Co
•
Filing: 1947-08-01
•
Granted: 1949-12-20
•
Expires: 1967-08-01
Abstract
No abstract record available.
Inventors
- 👤 Breadner Robert Leonard
- 👤 Simms Charles Henry
- 👤 Harris John William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:08
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/04; C03B23/049
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1974888A
Cited
US1867154A
Cited
GB410055A
Cited
DE604720C
Cited
US2102189A
Cited
US2102049A
Cited
US2204542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |