Patent US2993438A successfully refreshed from Google Patents.
US2993438A
Expired / Lapsed
US
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Duplicating machines
Assignee: Old Town Corp
•
Filing: 1957-06-18
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Granted: 1961-07-25
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Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Paul A Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:37
CPC Classifications
B; B41; B41L; B41L11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2660113A
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US2622519A
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US2745340A
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US2722886A
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US2717549A
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US2785893A
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US2830534A
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US2895416A
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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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |