US3293379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earphone
Assignee: Individual
•
Filing: 1963-07-15
•
Granted: 1966-12-20
•
Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Gorike Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:05
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
AN EARPHONE COMPRISING A HOUSING HAVING A TOP OPENING, AN EAR PIECE ENVELOPE INCLUDING A REAR PLATE PORTION HAVING A SUBSTANTIALLY CENTRAL OPENING WITH AN OPENING BOUNDING WALL PERIPHERALLY CONNECTED TO SAID HOUSING ADJACENT THE TOP THEREOF AND ALSO HAVING A FRONT PLATE PORTION, SAID PIECE ENVELOPE DEFINING AN INTERNAL CAVITY ABOVE SAID HOUSING AND EXTENDING RADIALLY OUTWARDLY BEYOND SAID HOUSING, A GREATLY MINIATURIZED ELECTRODYNAMIC DRIVE SYSTEM IN SAID HOUSING, AND A DIPHRAGM OF SUBSTANTIALLY NORMAL SIZE DISPOSED IN SAID CAVITY.
Claim 2
Dependent Claim
81 words
AN EARPHONE COMPRISING A HOUSING HAVING A TOP OPENING, AN EAR PIECE ENVELOPE INCLUDING A REAR PLATE PORTION HAVING A SUBSTANTIALLY CENTRAL OPENING WITH AN OPENING BOUNDING WALL PERIPHERALLY CONNECTED TO SAID HOUSING ADJACENT THE TOP THEREOF AND ALSO HAVING A FRONT PLATE PORTION, SAID PIECE ENVELOPE DEFINING AN INTERNAL CAVITY ABOVE SAID HOUSING AND EXTENDING RADIALLY OUTWARDLY BEYOND SAID HOUSING, A GREATLY MINIATURIZED ELECTRODYNAMIC DRIVE SYSTEM IN SAID HOUSING, AND A DIPHRAGM OF SUBSTANTIALLY NORMAL SIZE DISPOSED IN SAID CAVITY.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |