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US2930512A
Expired / Lapsed
US
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Apparatus for holding and discharging free-flowing solid materials
Assignee: PATON HOLDINGS Ltd
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Filing: 1955-07-01
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Granted: 1960-03-29
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Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
- 👤 Paton Hamilton Neil King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:15
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/72; B61; B61D; B61D5/00; B61D5/002; B61D5/004; B61D5/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2609125A
Cited
US2792262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |