US2310265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic conveying apparatus
Assignee: Individual
•
Filing: 1939-09-18
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Granted: 1943-02-09
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Expires: 1959-09-18
Abstract
No abstract record available.
Inventors
- 👤 Robert P Sweeny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:57
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/58; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/312; B01F25/3124; B01F25/31241; B01F23/00; B01F23/30; B01F23/32; B01F25/3125; B01F25/31253; B01F25/312533
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) | 1946-02-08 | 1946-08-10 | 1947-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-02-08 | 1950-08-10 | 1951-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-02-08 | 1954-08-10 | 1955-02-09 | $7700.00 | Window Closed / Lapsed |