Patent US2461213A successfully refreshed from Google Patents.
US2461213A
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Distance measuring device
Assignee: RCA Corp
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Filing: 1939-06-16
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Granted: 1949-02-08
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Expires: 1959-06-16
Abstract
No abstract record available.
Inventors
- 👤 William D Hershberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:42
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/282; H; H03; H03K; H03K3/00; H03K3/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1599596A
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US1908249A
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US1924156A
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US1982271A
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US2055883A
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US2103090A
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US2178074A
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US2143035A
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US2266668A
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US2185292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |