Patent US2329448A successfully refreshed from Google Patents.
US2329448A
Expired / Lapsed
US
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Excavator
Assignee: LA PLANT-CHOATE MANUFACTURING COMPANY Inc
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Filing: 1939-10-13
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Granted: 1943-09-14
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Expires: 1959-10-13
Abstract
No abstract record available.
Inventors
- 👤 Ellsworth W Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:31
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/46; E02F3/54; E02F3/64; E02F3/6454; E02F3/6481; E02F3/65; E02F3/654; E02F3/656; E02F3/657
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) | 1946-09-13 | 1947-03-15 | 1947-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-13 | 1951-03-15 | 1951-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-13 | 1955-03-15 | 1955-09-14 | $7700.00 | Window Closed / Lapsed |