Patent US2591846A successfully refreshed from Google Patents.
US2591846A
Expired / Lapsed
US
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Parallax corrector for use in gun control
Assignee: United States Department of the Navy
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Filing: 1948-12-30
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Granted: 1952-04-08
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Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred K Mann
- 👤 Lewis M Mott-Smith
- 👤 Lawrence R Quarles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:45
CPC Classifications
F; F41; F41G; F41G3/00; F41G3/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB476831A
Cited
US2443624A
Cited
GB579325A
Cited
US2432504A
Cited
US2486781A
Cited
US2434274A
Cited
US2428800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |