Patent US2706262A successfully refreshed from Google Patents.
US2706262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion coated articles
Assignee: American Optical Corp
•
Filing: 1950-07-15
•
Granted: 1955-04-12
•
Expires: 1970-07-15
Abstract
No abstract record available.
Inventors
- 👤 Barnes Robert Bowling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:23
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/10; G02B1/11; G02B1/113; H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE22076E
Cited
US1176746A
Cited
US1491830A
Cited
US2090922A
Cited
US2137118A
Cited
US2023558A
Cited
US2242567A
Cited
US2222414A
Cited
US2091152A
Cited
US2201245A
Cited
US2197625A
Cited
US2169838A
Cited
US2436847A
Cited
US2312206A
Cited
US2293529A
Cited
US2289978A
Cited
US2294930A
Cited
US2346810A
Cited
US2388203A
Cited
US2386626A
Cited
US2432484A
Cited
US2474061A
Cited
US2419177A
Cited
US2407680A
Cited
US2473825A
Cited
US2574971A
Cited
US2485561A
Cited
US2531945A
Cited
US2536764A
Cited
US2461464A
Cited
US2599739A
Cited
US2612612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-11 | 1958-10-11 | 1959-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-11 | 1962-10-11 | 1963-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-11 | 1966-10-11 | 1967-04-12 | $7700.00 | Window Closed / Lapsed |