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US2925879A
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Assignee: Individual
•
Filing: 1944-11-06
•
Granted: 1960-02-23
•
Expires: 1964-11-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Costa
- 👤 Reginald A Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:47
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/73; D06M11/74; B; B01; B01J; B01J20/00; B01J20/02; B01J20/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1565328A
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US1818155A
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US2072858A
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US1966553A
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US2048248A
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US2086591A
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US2387714A
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US2230903A
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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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |