US2463513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound recorder
Assignee: Dictaphone Corp
•
Filing: 1943-06-28
•
Granted: 1949-03-08
•
Expires: 1963-06-28
Abstract
No abstract record available.
Inventors
- 👤 George P Brubaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:18
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/34; G11B3/36; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1291515A
Cited
US1827519A
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US1833789A
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US1853650A
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US1998137A
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US2254839A
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GB539492A
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US2340658A
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US2241622A
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US2302732A
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US2266763A
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US2262148A
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US2323365A
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US2293219A
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US2380727A
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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) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |