US3525884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical vibrating devices
Assignee: NEC Corp
•
Filing: 1968-12-23
•
Granted: 1970-08-25
•
Expires: 1988-12-23
Abstract
No abstract record available.
Inventors
- 👤 Morio Onoe
- 👤 Takeshi Yano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:15
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1906985A
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US1913331A
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US2513340A
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US2861256A
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US3354413A
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FR1380257A
Cited
FR1507948A
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US3435260A
Cited
US3441753A
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US3425310A
Cited
DK36575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |