US2969203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording tape reel
Assignee: 3M Co
•
Filing: 1955-05-25
•
Granted: 1961-01-24
•
Expires: 1975-05-25
Abstract
No abstract record available.
Inventors
- 👤 Victor A Mohrlant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:56
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/04; B65H75/08; B65H75/14; B65H75/18; B65H75/22; G; G11; G11B; G11B23/00; G11B23/02; G11B23/037; G11B23/04; G11B23/041; G11B23/044; G11B23/08; G11B23/107; B65H2701/00; B65H2701/30; B65H2701/37; B65H2701/50; B65H2701/51; B65H2701/512; B65H2701/5122; B65H2701/513; B65H2701/5136
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US331956A
Cited
US1498133A
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DE673012C
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DE688033C
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US2639867A
Cited
DE865070C
Cited
US2778581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |