Patent US3407946A successfully refreshed from Google Patents.
US3407946A
Expired / Lapsed
US
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Control mechanism for backhoe
Assignee: Ware Machine Works Inc
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Filing: 1966-03-04
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Granted: 1968-10-29
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Expires: 1986-03-04
Abstract
No abstract record available.
Inventors
- 👤 John S Pilch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:45
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/38; E02F3/382; E02F3/384; E02F3/30; E02F3/32; E02F3/42; E02F3/425; E02F3/96; E02F3/963; E02F3/964
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2143546A
Cited
US2517153A
Cited
US2801013A
Cited
US2903145A
Cited
US3047171A
Cited
US3212659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |