US2810609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic conveyor system
Assignee: CAPITAL PRODUCTS Corp
•
Filing: 1952-10-13
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Granted: 1957-10-22
•
Expires: 1972-10-13
Abstract
No abstract record available.
Inventors
- 👤 Hiram E Temple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:30
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/04; B65G53/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189623594A
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US1052381A
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US1321262A
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DE338997C
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GB153746A
Cited
US2234788A
Cited
US2539109A
Cited
US2572862A
Cited
US2688618A
Cited
US2688517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |