US2674009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of embedding magnetic cue marks in films
Assignee: CINE DEVICES Inc
•
Filing: 1951-05-07
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Granted: 1954-04-06
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Expires: 1971-05-07
Abstract
No abstract record available.
Inventors
- 👤 Richard M Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:41
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/50; Y; Y10; Y10S; Y10S264/00; Y10S264/76; Y10S428/00; Y10S428/90; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49925; Y10T29/49934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB222940A
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US530817A
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US539719A
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US1334948A
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US772647A
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US2247558A
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GB602035A
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US2431238A
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US2473468A
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US2569228A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |