US2647753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph pickup mounting
Assignee: CBS Broadcasting Inc
•
Filing: 1948-09-22
•
Granted: 1953-08-04
•
Expires: 1968-09-22
Abstract
No abstract record available.
Inventors
- 👤 Peter C Goldmark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:53
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/12; G11B3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304404A
Cited
US1696872A
Cited
US703764A
Cited
US919856A
Cited
GB116163A
Cited
US1383372A
Cited
US2323066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |