US2915301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed slurry generator
Assignee: Individual
•
Filing: 1957-12-11
•
Granted: 1959-12-01
•
Expires: 1977-12-11
Abstract
No abstract record available.
Inventors
- 👤 John K Selden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:12
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/38; B28C5/381; B28C5/386; B28B; B28B1/00; B28B1/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1829714A
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US1731953A
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US1733018A
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US2337915A
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US2448042A
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US2706108A
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US2864714A
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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) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |