US2303756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High silica glass
Assignee: Corning Glass Works
•
Filing: 1938-11-04
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Granted: 1942-12-01
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Expires: 1958-11-04
Abstract
No abstract record available.
Inventors
- 👤 Nordberg Martin Emery
- 👤 Rumenapp Harold Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:25
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/02; B01D71/04; B29; B29C; B29C67/00; B44; B44F; B44F11/00; B44F11/06; C; C03; C03C; C03C11/00; C03C11/005; C03C23/00; C03C23/0095; C03C3/00; C03C3/04; C03C3/06; C03C3/061; C03C3/076; C03C3/089; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249969
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-11-30 | 1946-06-01 | 1946-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-30 | 1950-06-01 | 1950-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-30 | 1954-06-01 | 1954-12-01 | $7700.00 | Window Closed / Lapsed |