Patent US2453464A successfully refreshed from Google Patents.
Patent US3104290A successfully refreshed from Google Patents.
US3104290A
Expired / Lapsed
US
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Multiphase eyeglass-hearing aid unit
Assignee: OTARION Inc
•
Filing: 1957-02-25
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Granted: 1963-09-17
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Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Leland E Rosemond
- 👤 Greenbaum William
- 👤 Hellekjaer Kaare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:17
CPC Classifications
G; G02; G02C; G02C11/00; G02C11/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
COMBINATION EYEGLASSES AND BILATERAL HEARING AID DEVICE, COMPRISING A FRONT FRAME HAVING A PAIR OF TEMPLES CONNECTED THERETO, SAID TEMPLES COMPRISING HOLLOW HOUSINGS FOR THE RECEPTION OF HEARING AID COMPONENTS OF THE BILATERAL HEARING AID DEVICE, THE LATTER COMPRISING A MICROPHONE AND A CONTROL DISPOSED IN ONE HOUSING, SAID CONTROL PROVIDING MEANS FOR GRADUATING THE EFFECT OF THE
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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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |