US2447594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding and weighing apparatus
Assignee: FLSmidth and Co AS
•
Filing: 1944-04-01
•
Granted: 1948-08-24
•
Expires: 1964-04-01
Abstract
No abstract record available.
Inventors
- 👤 Louis S Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:07
CPC Classifications
G; G01; G01G; G01G11/00; G01G11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US771764A
Cited
US1125705A
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US1558668A
Cited
US1755103A
Cited
US1992716A
Cited
US2164796A
Cited
US2206237A
Cited
US2164812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |