US3547693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape
Assignee: Eastman Kodak Co
•
Filing: 1968-09-20
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Granted: 1970-12-15
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Expires: 1988-09-20
Abstract
No abstract record available.
Inventors
- 👤 Albert P Huguenard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:26
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/71; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31623; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31909; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA527016A
Cited
US2383601A
Cited
GB662650A
Cited
US2971916A
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US3029157A
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GB998648A
Cited
US3274111A
Cited
US3284360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |