Patent US5139818A successfully refreshed from Google Patents.
Patent US1909797A successfully refreshed from Google Patents.
US1909797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming electrical lead-ins for fused quartz devices
Assignee: Hanovia Chemical and Manufacturing Co
•
Filing: 1932-03-08
•
Granted: 1933-05-16
•
Expires: 1952-03-08
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:52
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/048; H; H01; H01J; H01J5/00; H01J5/32; Y; Y10; Y10S; Y10S264/00; Y10S264/78
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1936-05-15 | 1936-11-14 | 1937-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-05-15 | 1940-11-14 | 1941-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-05-15 | 1944-11-14 | 1945-05-16 | $7700.00 | Window Closed / Lapsed |