US2968404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1958-05-05
•
Granted: 1961-01-17
•
Expires: 1978-05-05
Abstract
No abstract record available.
Inventors
- 👤 Leo F Hotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:00
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/02; B01D29/00; B01D29/39; B01D29/88; B01D29/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US516439A
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US574420A
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US589528A
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US610527A
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US1724436A
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US1673572A
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US2093894A
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US2468296A
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US2409705A
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US2540362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |