US2579108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quartz working process and article
Assignee: General Electric Co
•
Filing: 1949-05-21
•
Granted: 1951-12-18
•
Expires: 1969-05-21
Abstract
No abstract record available.
Inventors
- 👤 Charles E Bock
- 👤 Jr Robert P Burrows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:52
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/08; C03B33/085; Y; Y10; Y10S; Y10S65/00; Y10S65/08; Y10S65/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US761111A
Cited
US1051035A
Cited
GB346940A
Cited
US1969658A
Cited
US1914205A
Cited
US2436819A
Cited
US2459209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |