US2065852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass resistant to alkali metal vapors and method of making it
Assignee: Corning Glass Works
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Filing: 1934-11-06
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Granted: 1936-12-29
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Expires: 1954-11-06
Abstract
No abstract record available.
Inventors
- 👤 Robert H Dalton
- 👤 Harrison P Hood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:57
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/42; C07C303/44; C03; C03C; C03C17/00; C03C17/02; C03C17/22; C03C17/23; C03C17/25; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/228; C03C2217/23; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31; Y10T428/315
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) | 1939-12-29 | 1940-06-29 | 1940-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-29 | 1944-06-29 | 1944-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-29 | 1948-06-29 | 1948-12-29 | $7700.00 | Window Closed / Lapsed |