US3376572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroacoustic wave shaping device
Assignee: RCA Corp
•
Filing: 1966-09-15
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Granted: 1968-04-02
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Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Mayo Ralph Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:58
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/04; H03K5/06; H03K5/065; G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/26; G01S13/28; G01S13/282; H03H; H03H9/00; H03H9/30; H03H9/42; H03H9/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |