US2259395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens coating
Assignee: RCA Corp
•
Filing: 1940-07-31
•
Granted: 1941-10-14
•
Expires: 1960-07-31
Abstract
No abstract record available.
Inventors
- 👤 Lawrence T Sachtleben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:38
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; C23C14/042; C23C14/044
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) | 1944-10-13 | 1945-04-14 | 1945-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-10-13 | 1949-04-14 | 1949-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-10-13 | 1953-04-14 | 1953-10-14 | $7700.00 | Window Closed / Lapsed |