US2593227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1946-03-22
•
Granted: 1952-04-15
•
Expires: 1966-03-22
Abstract
No abstract record available.
Inventors
- 👤 Paul H Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:37
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/02; B01D24/10; B01D24/16; B01D24/165; B01D24/007; B01D24/008; B01D35/00; B01D35/16; B01D35/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US316925A
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US620621A
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FR35587E
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US1994372A
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US2077999A
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US2093549A
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US2183877A
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US2232423A
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US2364617A
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US2280577A
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US2353433A
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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) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |