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US2969030A
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Assignee: David Kahn Inc
•
Filing: 1958-10-22
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Granted: 1961-01-24
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Expires: 1978-10-22
Abstract
No abstract record available.
Inventors
- 👤 Julius M Kahn
- 👤 Kahn Samuel
- 👤 Yager Harry
- 👤 Helen E Weisser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:27
CPC Classifications
B; B43; B43K; B43K7/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49853; Y10T29/49854
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR965335A
Cited
US325692A
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US1225915A
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US1152983A
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US1144281A
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US1697035A
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US1665203A
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US2398698A
Cited
US2588829A
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US2718051A
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US2646761A
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FR1032475A
Cited
BE514617A
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US2879586A
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US2813512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |