Patent US3040622A successfully refreshed from Google Patents.
US3040622A
Expired / Lapsed
US
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Apparatus for dual image projection upon a single screen
Assignee: Individual
•
Filing: 1959-03-16
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Granted: 1962-06-26
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Expires: 1979-03-16
Abstract
No abstract record available.
Inventors
- 👤 Victor L Reddle
- 👤 Kurt H Hoppmann
- 👤 Stanley F Staples
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:33
CPC Classifications
G; G03; G03B; G03B21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1954787A
Cited
US2198815A
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US2477923A
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US2525957A
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US2487875A
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US2611296A
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US2754722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |