Patent US2423334A successfully refreshed from Google Patents.
US2423334A
Expired / Lapsed
US
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Guide roller assembly for motionpicture projectors
Assignee: AMERICAN PATTERN AND Manufacturing CO
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Filing: 1942-06-16
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Granted: 1947-07-01
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Expires: 1962-06-16
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:51
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1854004A
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US1707839A
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US1802708A
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US1957164A
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US2164748A
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US2178208A
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US1986180A
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US2031756A
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US2229237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-30 | 1950-12-30 | 1951-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-30 | 1954-12-30 | 1955-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-30 | 1958-12-30 | 1959-07-01 | $7700.00 | Window Closed / Lapsed |