Patent US4019431A successfully refreshed from Google Patents.
Patent US3189115A successfully refreshed from Google Patents.
US3189115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqua-track g.e.m.
Assignee: Individual
•
Filing: 1963-05-27
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Granted: 1965-06-15
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Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Scott C Rethorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:53
CPC Classifications
B; B60; B60V; B60V1/00; B60F; B60F3/00; B60F3/0061
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
AN AMPHIBIOUS G.E.M. COMPRISING: A BOAT HULL; A PLENUM CHAMBER IN SAID HULL; A FAN FOR SELECTIVELY DELIVERING AIR TO SAID PLENUM CHAMBER; EXTENDIBLE AND RETRACTABLE NOZZLE MEANS COMMUNICATING WITH SAID PLENUM CHAMBER AND POSITIONED UNDER THE BOAT HULL TO SELECTIVELY PROVIDE AN AIR CUSHION BETWEEN THE HULL AND A WATER OR LAND SURFACE UNDERNEATH SAID HULL, SAID NOZZLE MEANS BEING EXTENDED DURING DISCHARGE OF AIR TO PROVIDE SAID CUSHION, SAID NOZZLE MEANS BEING RETRACTED WHEN NO FLOW OF AIR IS PROVIDED TO SAID PLENUM CHAMBER; AND MEANS FOR PROPELLING SAID G.E.M. AS DISPLACEMENT VESSEL AND LAND VEHICLES WHENEVER SAID NOZZLE MEANS IS RETRACTED.
References Cited (Backward Citations)
US2894476A
Cited
US3029042A
Cited
GB860781A
Cited
FR1238499A
Cited
US3054467A
Cited
US3095938A
Cited
US3114347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |