US3328537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency sound translating device
Assignee: Individual
•
Filing: 1964-01-09
•
Granted: 1967-06-27
•
Expires: 1984-01-09
Abstract
No abstract record available.
Inventors
- 👤 Hecht William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:16
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/02; H04R7/12; H04R7/127; H04R9/00; H04R9/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
A HIGH FREQUENCY SOUND TRANSLATING DEVICE COMPRISING (A) A VOICE COIL, (B) A FABRIC DOME ATTACHED TO THE VOICE COIL AND DEFINING A DIAPHRAGM, (C) A COATING ON THE FABRIC DIAPHRAGM IMPARTING A SLIGHTLY RIGID, RESILIENT, YIELDABLE, SELF-SUSTAINING CHARACTER, AND LEAVING THE FABRIC INTERSTICES OPEN, (D) A SOFT FILM ADHERING TO THE FABRIC DIAPHRAGM DEFINING A REDIATING AREA AND RENDERING IT IMPENETRABLE TO AIR, AND CLOSING THE FABRIC INTERSTICES.
References Cited (Backward Citations)
AT106394B
Cited
FR713126A
Cited
US1926187A
Cited
US2303989A
Cited
US2502853A
Cited
US2818130A
Cited
US2812825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |