US2669156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image slide projector apparatus
Assignee: Individual
•
Filing: 1950-04-22
•
Granted: 1954-02-16
•
Expires: 1970-04-22
Abstract
No abstract record available.
Inventors
- 👤 Gerald Harold G Fitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:03
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/132; Y; Y10; Y10S; Y10S353/00; Y10S353/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1038349A
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US1176485A
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US1204425A
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US1174208A
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US1857135A
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US1738942A
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US2124954A
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US2158903A
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US2243084A
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US2221160A
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US2250174A
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US2330799A
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US2285915A
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US2564057A
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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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |