Patent US3239022A successfully refreshed from Google Patents.
US3239022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial trucks provided with air-lift castors
Assignee: Linde Material Handling UK Ltd
•
Filing: 1962-02-06
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Granted: 1966-03-08
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Expires: 1982-02-06
Abstract
No abstract record available.
Inventors
- 👤 Dolphin John Robert Vernon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:51
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/07572; B66F9/07577
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |