US2786387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflecting mirror optical projector apparatus
Assignee: Individual
•
Filing: 1955-02-04
•
Granted: 1957-03-26
•
Expires: 1975-02-04
Abstract
No abstract record available.
Inventors
- 👤 Belok Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:28
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1053650A
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US1699689A
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US1669027A
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US1785347A
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US2198014A
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US2306679A
Cited
US2531783A
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US2490052A
Cited
US2520634A
Cited
US2697379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |