US2522938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflecting means for limiting vision
Assignee: —
•
Filing: —
•
Granted: 1950-09-19
•
Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:12
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/02; G02B23/08; G09; G09B; G09B9/00; G09B9/02; G09B9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1356708A
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US1451096A
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US1748624A
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US1885744A
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US2322770A
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US2090132A
Cited
US2255197A
Cited
US2359994A
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US2257510A
Cited
US2343473A
Cited
US2425522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |