US3480964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure for assembling annular tensioned recording discs
Assignee: Boeing North American Inc
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Filing: 1967-02-09
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Granted: 1969-11-25
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Expires: 1987-02-09
Abstract
No abstract record available.
Inventors
- 👤 Albert E Siler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:29
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/02; G11B33/04; G11B33/0405; G11B33/0433; G11B33/0444; G01; G01D; G01D15/00; G01D15/28; G01D15/32; G11B5/00; G11B5/74; G11B5/82; G11B5/825; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49874
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |