US2820853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph stylus assembly
Assignee: General Electric Co
•
Filing: 1955-10-13
•
Granted: 1958-01-21
•
Expires: 1975-10-13
Abstract
No abstract record available.
Inventors
- 👤 Dally Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:04
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/16; H04R11/00; H04R11/08; H04R11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2475608A
Cited
US2554209A
Cited
US2622156A
Cited
US2742295A
Cited
US2742530A
Cited
US2759734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |