US2464209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflex sight with large exit pupil
Assignee: Individual
•
Filing: 1945-10-26
•
Granted: 1949-03-15
•
Expires: 1965-10-26
Abstract
No abstract record available.
Inventors
- 👤 Leo H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:56
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/02; G02B23/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1319292A
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US683203A
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US1456427A
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US1563373A
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DE452644C
Cited
US1688606A
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GB437444A
Cited
FR828107A
Cited
US2390439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |