US2827245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable tape drive
Assignee: KLEINSCHMIDT LAB Inc
•
Filing: 1953-05-14
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Granted: 1958-03-18
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Expires: 1973-05-14
Abstract
No abstract record available.
Inventors
- 👤 Edward F Kleinschmidt
- 👤 Carl P Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:34
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/18; G06K13/26; G11; G11B; G11B15/00; G11B15/18; G11B15/43; H; H04; H04L; H04L13/00; H04L13/02; H04L13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1172733A
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US1071545A
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US1882578A
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US1988284A
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DE659872C
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US2055785A
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US2203354A
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US2310947A
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US2600409A
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US2563198A
Cited
US2705600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |