US2309211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable dial for determining amount of weight on formation
Assignee: MACCLATCHIE Manufacturing Co
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Filing: 1939-07-04
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Granted: 1943-01-26
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Expires: 1959-07-04
Abstract
No abstract record available.
Inventors
- 👤 Harold A Raphael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:27
CPC Classifications
G; G01; G01G; G01G19/00; E; E21; E21B; E21B47/00; E21B47/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-01-25 | 1946-07-27 | 1947-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-25 | 1950-07-27 | 1951-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-25 | 1954-07-27 | 1955-01-26 | $7700.00 | Window Closed / Lapsed |