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US2597954A
Expired / Lapsed
US
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Earthworking implement
Assignee: Individual
•
Filing: 1949-01-06
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Granted: 1952-05-27
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Expires: 1969-01-06
Abstract
No abstract record available.
Inventors
- 👤 Fred W Schaller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:10
CPC Classifications
A; A01; A01D; A01D7/00; A01D7/02; A01B; A01B1/00; A01B1/06; A01B1/12; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |