US1888341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite silica article
Assignee: General Electric Co
•
Filing: 1930-11-06
•
Granted: 1932-11-22
•
Expires: 1950-11-06
Abstract
No abstract record available.
Inventors
- 👤 Gunnar A F Winckler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:01
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/20; C03B19/00; C03B19/01; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259
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) | 1935-11-22 | 1936-05-23 | 1936-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-22 | 1940-05-23 | 1940-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-22 | 1944-05-23 | 1944-11-22 | $7700.00 | Window Closed / Lapsed |