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US2568085A
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Assignee: Individual
•
Filing: 1947-10-10
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Granted: 1951-09-18
•
Expires: 1967-10-10
Abstract
No abstract record available.
Inventors
- 👤 John J Naugle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:23
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D29/00; B01D29/39; B01D29/62; B01D29/64; B01D29/6469; B01D29/6492; B01D29/66; B01D29/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR635462A
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US2023910A
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US2013776A
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US2031107A
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US2079366A
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US2200899A
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US2255937A
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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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |