Patent US2451555A successfully refreshed from Google Patents.
US2451555A
Expired / Lapsed
US
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Means for charging, sealing, and discharging mixers
Assignee: Chain Belt Co
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Filing: 1944-10-23
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Granted: 1948-10-19
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Expires: 1964-10-23
Abstract
No abstract record available.
Inventors
- 👤 Louis G Hilkemeier
- 👤 George K Viall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:36
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/42; B28C5/4203; B28C5/4234
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US410292A
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US1103534A
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US2265751A
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US2265752A
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US2281820A
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US2285685A
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US2280513A
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US2316137A
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US2329167A
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US2360345A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |