Patent US2993433A successfully refreshed from Google Patents.
US2993433A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1957-06-27
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Granted: 1961-07-25
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Expires: 1977-06-27
Abstract
No abstract record available.
Inventors
- 👤 George H Leonard
- 👤 William F Huck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:45
CPC Classifications
B; B41; B41J; B41J13/00; B41J13/10; B41J13/12; G; G06; G06K; G06K1/00; G06K1/14; G06K13/00; G06K13/02; G06K13/08; G06K17/00; G11; G11B; G11B7/00; G11B7/002; G11B7/0033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1354918A
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US1564221A
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US1489167A
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US2406040A
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US2419345A
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US2551080A
Cited
US2503185A
Cited
US2568064A
Cited
US2765733A
Cited
US2766685A
Cited
US2771838A
Cited
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 |