US2702631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic separator
Assignee: L H SCHULTZ Manufacturing CO
•
Filing: 1950-08-25
•
Granted: 1955-02-22
•
Expires: 1970-08-25
Abstract
No abstract record available.
Inventors
- 👤 Russell A Hamaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:15
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323502A
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US1616283A
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US2152273A
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US2347871A
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US2399740A
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US2323087A
Cited
US2525481A
Cited
US2543310A
Cited
US2473655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-21 | 1958-08-23 | 1959-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-21 | 1962-08-23 | 1963-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-21 | 1966-08-23 | 1967-02-22 | $7700.00 | Window Closed / Lapsed |