US3396860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excaator and grader or crane apparatus
Assignee: Hein Werner Corp
•
Filing: 1966-04-12
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Granted: 1968-08-13
•
Expires: 1986-04-12
Abstract
No abstract record available.
Inventors
- 👤 Wallace J Witwer
- 👤 Jay V Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/283; E02F3/286; B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/42; E02F3/30; E02F3/303; E02F3/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB853762A
Cited
US3087636A
Cited
FR1279493A
Cited
US3300060A
Cited
US3285431A
Cited
US3298548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |