Patent US2551328A successfully refreshed from Google Patents.
Patent US2479640A successfully refreshed from Google Patents.
US2479640A
Expired / Lapsed
US
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Phonographic apparatus
Assignee: Individual
•
Filing: 1945-10-12
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Granted: 1949-08-23
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Expires: 1965-10-12
Abstract
No abstract record available.
Inventors
- 👤 William K Rieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:18
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B19/265; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US788927A
Cited
US786347A
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US1285641A
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US1253276A
Cited
US1683670A
Cited
US2069136A
Cited
US2307475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |