US2989198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backhoes for ditch digging machines
Assignee: EARTH EQUIPMENT CORP
•
Filing: 1959-01-19
•
Granted: 1961-06-20
•
Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 William J Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:49
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/32; E02F3/303; E02F3/306; E02F3/36; E02F3/42; E02F3/425; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/18984
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21405E
Cited
US1747698A
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US2541045A
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US2476249A
Cited
US2594720A
Cited
US2725996A
Cited
FR1085841A
Cited
US2822094A
Cited
US2831589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |