Patent US2445238A successfully refreshed from Google Patents.
US2445238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of skeletonized low reflectance glass surface with fluosilicic acid vapor
Assignee: RCA Corp
•
Filing: 1946-10-08
•
Granted: 1948-07-13
•
Expires: 1966-10-08
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Nicoll
- 👤 Ferd E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:13
CPC Classifications
C; C03; C03C; C03C15/00; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |