Patent US2718399A successfully refreshed from Google Patents.
US2718399A
Expired / Lapsed
US
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Turntable and tone arm control
Assignee: Philips North America LLC
•
Filing: 1949-02-25
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Granted: 1955-09-20
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Expires: 1969-02-25
Abstract
No abstract record available.
Inventors
- 👤 Norman F Martin
- 👤 Robert H Dreisbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:15
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/44; G11B3/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US937459A
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US1394804A
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US1992893A
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US2113401A
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US2087135A
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US2145743A
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US2326625A
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US2266751A
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US2320572A
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US2526188A
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US2568671A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |