US2758824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously charging mixer
Assignee: Simpson Herbert Corp
•
Filing: 1953-08-31
•
Granted: 1956-08-14
•
Expires: 1973-08-31
Abstract
No abstract record available.
Inventors
- 👤 Robert L Mcilvaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:32
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/04; B22C5/0409; B22C5/0472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US455677A
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US473280A
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GB189922124A
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US765259A
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US1089883A
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US1750244A
Cited
US1969523A
Cited
US2619293A
Cited
US2639901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |