US2633244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1948-03-26
•
Granted: 1953-03-31
•
Expires: 1968-03-26
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Rood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:31
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/88; B01D29/90; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/40; B01D2201/4046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US513551A
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US1422190A
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GB404309A
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US1969033A
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US1976547A
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US2098102A
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US2117361A
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US2106218A
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US2249071A
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US2319421A
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US2323152A
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US2287526A
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US2392901A
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US2454033A
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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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |