Patent US2556040A successfully refreshed from Google Patents.
US2556040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damping means for capacity type phonograph pickups
Assignee: Individual
•
Filing: 1946-06-11
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Granted: 1951-06-05
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Expires: 1966-06-11
Abstract
No abstract record available.
Inventors
- 👤 Miller Walter
- 👤 Smardo Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:32
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/26; H04R1/00; H04R1/20; H04R1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1383737A
Cited
US1302140A
Cited
FR524151A
Cited
US1535538A
Cited
US1747829A
Cited
US1732393A
Cited
US2069254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |