Patent US2752702A successfully refreshed from Google Patents.
US2752702A
Expired / Lapsed
US
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Digging tooth for excavators
Assignee: CLEVELAND TRENCHES Co
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Filing: 1952-08-06
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Granted: 1956-07-03
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Expires: 1972-08-06
Abstract
No abstract record available.
Inventors
- 👤 William A Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:49
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2866; E02F9/2808; E02F9/2816; E02F9/2825; Y; Y10; Y10T; Y10T403/00; Y10T403/49; Y10T403/4966; Y10T403/70; Y10T403/7098
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US289797A
Cited
USRE16120E
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US1816710A
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US1863802A
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US2131975A
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US2280004A
Cited
US2397521A
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US2443249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |