Patent US3035127A successfully refreshed from Google Patents.
US3035127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hearing aids
Assignee: Individual
•
Filing: 1955-04-15
•
Granted: 1962-05-15
•
Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Charles W Strzalkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:35
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/65; G; G02; G02C; G02C11/00; G02C11/06; H04R25/55; H04R25/556
Claims Analysis
Total Claims: 0
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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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |