US2747743A
Expired / Lapsed
US
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Assignee: Case LLC
•
Filing: 1950-09-23
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Granted: 1956-05-29
•
Expires: 1970-09-23
Abstract
No abstract record available.
Inventors
- 👤 John F Talak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:00
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D27/00; B01D27/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7935; Y10T137/794; Y10T137/8085
Claims Analysis
Total Claims: 0
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US2287344A
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US2422647A
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US2404621A
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US2597217A
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US2577217A
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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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |