US2608302A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1949-11-23
•
Granted: 1952-08-26
•
Expires: 1969-11-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph Mattei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:19
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE131135C
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US1676024A
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US1755482A
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US1884615A
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US1937415A
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GB497020A
Cited
US2239868A
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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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |