Patent US2501573A successfully refreshed from Google Patents.
US2501573A
Expired / Lapsed
US
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Magnetic wire sound recording and reproducing apparatus
Assignee: WIRECORDER Corp
•
Filing: 1945-02-14
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Granted: 1950-03-21
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Expires: 1965-02-14
Abstract
No abstract record available.
Inventors
- 👤 Donald B Mclouth
- 👤 Mortimer A Neff
- 👤 William P Haboush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:54
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/32; B; B65; B65H; B65H51/00; B65H51/02; B65H51/04; B65H51/08; B65H51/10; G11B25/00; G11B25/08
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) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |