US3468393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cushion transporting system for heavy duty pallet
Assignee: WILLIAM M HARRISON
•
Filing: 1967-05-26
•
Granted: 1969-09-23
•
Expires: 1987-05-26
Abstract
No abstract record available.
Inventors
- 👤 William M Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:36
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/02; B60V3/025; B65; B65G; B65G51/00; B65G51/02; B65G51/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US242668A
Cited
US3124209A
Cited
US1000152A
Cited
GB893715A
Cited
US3055446A
Cited
US3232366A
Cited
US3228294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |