US2561466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph mechanism
Assignee: Dictaphone Corp
•
Filing: 1944-09-12
•
Granted: 1951-07-24
•
Expires: 1964-09-12
Abstract
No abstract record available.
Inventors
- 👤 Carl D Gahagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:36
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/34; G11B3/36; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19805
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US750977A
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US1183597A
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US1277371A
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US1446006A
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GB324936A
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US1891369A
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US1855058A
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DE577613C
Cited
US2244506A
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US2293220A
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US2354558A
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US2357033A
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US2455466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |