US2819088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tone arm constructions for phonographs
Assignee: Sears Roebuck and Co
•
Filing: 1952-07-16
•
Granted: 1958-01-07
•
Expires: 1972-07-16
Abstract
No abstract record available.
Inventors
- 👤 Earl D Boisselier
- 👤 Felix Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:40
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/12; G11B3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1443961A
Cited
US1364180A
Cited
US1539412A
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US1646201A
Cited
US2499343A
Cited
US2619352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |