US2422954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective reflector
Assignee: RCA Corp
•
Filing: 1942-10-31
•
Granted: 1947-06-24
•
Expires: 1962-10-31
Abstract
No abstract record available.
Inventors
- 👤 Glenn L Dimmick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1181754A
Cited
US1176313A
Cited
US1222049A
Cited
US1989824A
Cited
GB492871A
Cited
US2207656A
Cited
US2281474A
Cited
US2252770A
Cited
US2289054A
Cited
US2301456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |