Patent US1236258A successfully refreshed from Google Patents.
Patent US2974430A successfully refreshed from Google Patents.
US2974430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steerable material handling device
Assignee: Motors Liquidation Co
•
Filing: 1957-04-08
•
Granted: 1961-03-14
•
Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph J Bernotas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:25
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7609
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1089988A
Cited
US2197390A
Cited
US2193367A
Cited
US2386483A
Cited
US2604708A
Cited
US2595594A
Cited
US2565337A
Cited
US2683496A
Cited
US2711257A
Cited
US2860793A
Cited
US2787391A
Cited
US2835397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |