US2473524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead estimation training reflex gun sight
Assignee: Individual
•
Filing: 1945-06-30
•
Granted: 1949-06-21
•
Expires: 1965-06-30
Abstract
No abstract record available.
Inventors
- 👤 Donald L Hibbard
- 👤 John N M Howells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:51
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/0101; F; F41; F41G; F41G3/00; F41G3/26; F41G3/2616; F41G3/2622; F41G3/2644; G02B27/0149; G02B2027/0154; G02B27/0189
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2389142A
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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) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |