US2449582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsating pneumatic stratifier
Assignee: Individual
•
Filing: 1945-08-03
•
Granted: 1948-09-21
•
Expires: 1965-08-03
Abstract
No abstract record available.
Inventors
- 👤 Brusset Joan Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:10
CPC Classifications
B; B03; B03B; B03B4/00; B03B4/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US402094A
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US1875296A
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US1269085A
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US1494480A
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US2095283A
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US1843405A
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US1946459A
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FR808429A
Cited
US2148068A
Cited
US2241842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |