Patent US2492964A successfully refreshed from Google Patents.
US2492964A
Expired / Lapsed
US
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Photoelectric miniature radio range
Assignee: Individual
•
Filing: 1945-04-23
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Granted: 1950-01-03
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Expires: 1965-04-23
Abstract
No abstract record available.
Inventors
- 👤 Daniel R Butterly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:06
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/26; H; H01; H01J; H01J40/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2243600A
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US2444477A
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US2452038A
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US2454503A
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US2389359A
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US2326764A
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US2366603A
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US2358793A
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US2352216A
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US2406751A
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US2429597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |