US2997547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable mountings for magnetic heads and the like
Assignee: Canadian Patents and Development Ltd
•
Filing: 1958-05-15
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Granted: 1961-08-22
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Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 Chester E Beachell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:58
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/02; G11B15/00; G11B15/18; G11B15/26; G11B15/34; G11B15/56; G11B15/60; G11B15/66; G11B15/662; G11B25/00; G11B25/06; G11B5/48; G11B5/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE676810C
Cited
US2530584A
Cited
DE828014C
Cited
US2721743A
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US2678971A
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US2644856A
Cited
US2864892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |