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Patent US2634651A successfully refreshed from Google Patents.
US2634651A
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Enlarging apparatus
Assignee: Fed Manufacturing & Engineering Corp
•
Filing: 1949-08-20
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Granted: 1953-04-14
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Expires: 1969-08-20
Abstract
No abstract record available.
Inventors
- 👤 Kaplowitz Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:18
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2009262A
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US1996481A
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US2206396A
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US2172246A
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US2257444A
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US2234698A
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US2287640A
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US2461668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |