US2806704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph record device and method of making said device
Assignee: Individual
•
Filing: 1951-03-09
•
Granted: 1957-09-17
•
Expires: 1971-03-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry Warren Burdett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:19
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/0282; Y; Y10; Y10S; Y10S425/00; Y10S425/033; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49076; Y10T29/4957; Y10T29/49577
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US425768A
Cited
US1266767A
Cited
US1414522A
Cited
US1677919A
Cited
US1827051A
Cited
US1755743A
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FR725759A
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GB386842A
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US2188091A
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US2136370A
Cited
US2253014A
Cited
US2295938A
Cited
US2330718A
Cited
US2544010A
Cited
US2557399A
Cited
US2517440A
Cited
US2570625A
Cited
GB635868A
Cited
US2536922A
Cited
US2501465A
Cited
US2645499A
Cited
US2619351A
Cited
US2536979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |