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Patent US2474386A successfully refreshed from Google Patents.
US2474386A
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Headband and earphone mounting
Assignee: Individual
•
Filing: 1944-06-19
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Granted: 1949-06-28
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Expires: 1964-06-19
Abstract
No abstract record available.
Inventors
- 👤 Volkmann John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:13
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/16; A42B3/166
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE353758C
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US911178A
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US1573839A
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US1452851A
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US1579412A
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DE439808C
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US2337953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |