Patent US200572A successfully refreshed from Google Patents.
US2355550A
Expired / Lapsed
US
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Apparatus for producing air colloids
Assignee: Individual
•
Filing: 1943-08-05
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Granted: 1944-08-08
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Expires: 1963-08-05
Abstract
No abstract record available.
Inventors
- 👤 Nusbaum Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:15
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/21; B01F33/00; B01F33/50; B01F33/501; B01F33/5011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-08-08 | 1948-02-07 | 1948-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-08 | 1952-02-07 | 1952-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-08 | 1956-02-07 | 1956-08-08 | $7700.00 | Window Closed / Lapsed |