US3073411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical apparatus
Assignee: RCA Corp
•
Filing: 1959-10-29
•
Granted: 1963-01-15
•
Expires: 1979-10-29
Abstract
No abstract record available.
Inventors
- 👤 John C Bleazey
- 👤 Preston John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:41
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/02; H04R7/12; H04R7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A VIBRATILE ELEMENT WHICH COMPRISES A SHEET OF FLEXIBLE MATERIAL OF SUBSTANTIALLY UNIFORM THICKNESS HAVING A PLURALITY OF PROTUBERANCES ON ONE SIDE THEREOF, SAID PRO-
Claim 2
Dependent Claim
25 words
A VIBRATILE ELEMENT WHICH COMPRISES A SHEET OF FLEXIBLE MATERIAL OF SUBSTANTIALLY UNIFORM THICKNESS HAVING A PLURALITY OF PROTUBERANCES ON ONE SIDE THEREOF, SAID PRO-
References Cited (Backward Citations)
US1097499A
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US1118345A
Cited
US1763780A
Cited
US1917309A
Cited
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GB726780A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |