Patent US2852619A successfully refreshed from Google Patents.
US2852619A
Expired / Lapsed
US
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Phonograph cartridge
Assignee: Bosch Security Systems Inc
•
Filing: 1955-09-23
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Granted: 1958-09-16
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Expires: 1975-09-23
Abstract
No abstract record available.
Inventors
- 👤 John F Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:21
CPC Classifications
H; H04; H04R; H04R17/00; H04R17/04; H04R17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2106051A
Cited
US2699470A
Cited
GB708091A
Cited
US2717929A
Cited
US2825763A
Cited
US2742530A
Cited
US2702317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |