Patent US2030969A successfully refreshed from Google Patents.
US2607136A
Expired / Lapsed
US
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Bucket cleaner for trench digging machines
Assignee: Individual
•
Filing: 1947-11-26
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Granted: 1952-08-19
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Expires: 1967-11-26
Abstract
No abstract record available.
Inventors
- 👤 William H Hellums
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:31
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/02; E02F9/022; E02F3/00; E02F3/04; E02F3/08; E02F3/082; E02F3/10; E02F3/12; E02F3/14; E02F3/144; E02F3/147; Y; Y10; Y10S; Y10S37/00; Y10S37/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1349936A
Cited
US800367A
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US993706A
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US1531755A
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US1623957A
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US1959768A
Cited
US1866037A
Cited
US1962075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |