Patent US3392800A successfully refreshed from Google Patents.
US3392800A
Expired / Lapsed
US
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Air supported material handling device with vibration preventing means
Assignee: Doosan Bobcat North America Inc
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Filing: 1965-10-23
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Granted: 1968-07-16
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Venkat K Swamy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:27
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/04; B60V3/00; B60V3/02; B60V3/025; B65; B65D; B65D19/00; B65D19/0004; B65D19/0053; B65D19/0055; B65D19/0067; B65D19/0071; B65D19/0075; B65D19/38; B65D19/40; B65G; B65G51/00; B65G51/02; B65G51/03; B65G7/00; B65G7/02; B65G7/06; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00024; B65D2519/00029; B65D2519/00044; B65D2519/00258; B65D2519/00263; B65D2519/00273; B65D2519/00283; B65D2519/00293; B65D2519/00313; B65D2519/00323; B65D2519/00328; B65D2519/00338; B65D2519/00547; B65D2519/00552; B65D2519/00572
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |