US3536832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accessory apparatus for conversion of a screen picture into a three-dimensional virtual image
Assignee: Individual
•
Filing: 1966-05-02
•
Granted: 1970-10-27
•
Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Erich Zipse
- 👤 Wilhelmine Zipse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:27
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/50; G02B30/56; H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA720633A
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US2045120A
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US2285509A
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US2287307A
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US2304490A
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US2499579A
Cited
GB868118A
Cited
US2977412A
Cited
US3041496A
Cited
US3185020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |