US2429152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ozonizer construction
Assignee: Individual
•
Filing: 1942-06-29
•
Granted: 1947-10-14
•
Expires: 1962-06-29
Abstract
No abstract record available.
Inventors
- 👤 Donald K Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:31
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/16; A61L2/20; A61L2/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189402488A
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GB190317885A
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US788557A
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US955818A
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US991767A
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US979999A
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US1064064A
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US1044700A
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GB191309282A
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GB108293A
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GB263356A
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US1743202A
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US2093619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-13 | 1951-04-14 | 1951-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-13 | 1955-04-14 | 1955-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-13 | 1959-04-14 | 1959-10-14 | $7700.00 | Window Closed / Lapsed |