Patent US3347197A successfully refreshed from Google Patents.
US3347197A
Expired / Lapsed
US
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Foil systems
Assignee: Individual
•
Filing: 1964-09-10
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Granted: 1967-10-17
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Expires: 1984-09-10
Abstract
No abstract record available.
Inventors
- 👤 Paul A Scherer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:31
CPC Classifications
B; B63; B63H; B63H11/00; B63H11/02; B63H11/04; B63H11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A CRAFT COMPRISING. (A) A BODY; (B) BODY SUPPORTING MEANS; (C) AT LEAST ONE DISPLACEMENT FOIL ENGAGING BODY SUPPORTING MEANS; (D) CRAFT THRUST PRODUCING MEANS IN OPERATIVE ENGAGEMENT WITH CRAFT; (E) CONTROL MEANS OPERATIVELY JOINED TO THE DISPLACEMENT FOIL, TO CONTROL AND MAINTAIN SUBSTANTIALLY CONSTANT THE DYNAMIC LIFT OF THE DISPLACEMENT FOIL RELATIVE TO THE CRAFT, IRRESPECTIVE OF VARIATIONS IN THE FLOW OF THE FLUID MEDIUM RELATIVE TO THE CRAFT.
Claim 2
Dependent Claim
70 words
A CRAFT COMPRISING. (A) A BODY; (B) BODY SUPPORTING MEANS; (C) AT LEAST ONE DISPLACEMENT FOIL ENGAGING BODY SUPPORTING MEANS; (D) CRAFT THRUST PRODUCING MEANS IN OPERATIVE ENGAGEMENT WITH CRAFT; (E) CONTROL MEANS OPERATIVELY JOINED TO THE DISPLACEMENT FOIL, TO CONTROL AND MAINTAIN SUBSTANTIALLY CONSTANT THE DYNAMIC LIFT OF THE DISPLACEMENT FOIL RELATIVE TO THE CRAFT, IRRESPECTIVE OF VARIATIONS IN THE FLOW OF THE FLUID MEDIUM RELATIVE TO THE CRAFT.
References Cited (Backward Citations)
US1768130A
Cited
US1846602A
Cited
US1887417A
Cited
FR829174A
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GB717416A
Cited
US2749870A
Cited
US2773467A
Cited
US2749871A
Cited
US2804038A
Cited
US2906228A
Cited
US3141437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |