Patent US2444356A successfully refreshed from Google Patents.
US2444356A
Expired / Lapsed
US
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Retrodirective light-reflecting device
Assignee: Individual
•
Filing: 1943-05-12
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Granted: 1948-06-29
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Expires: 1963-05-12
Abstract
No abstract record available.
Inventors
- 👤 Richard W Luce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:47
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/126
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |