US3121890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water ski
Assignee: Individual
•
Filing: 1961-09-01
•
Granted: 1964-02-25
•
Expires: 1981-09-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph F Rumsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:12
CPC Classifications
B; B63; B63B; B63B32/00; B63B32/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A WATER SKI ADAPTED TO SUPPORT A PERSON STANDING THEREON, INCLUDING (1) A FOOT RETAINING MEANS MOUNTED ON THE UPPER SURFACE OF SAID SKI, (2) A FRONT HYDRO-FOIL MEMBER DEPENDING FROM SAID SKI AT A LOCATION REMOTE FROM THE FRONT END THEREOF BUT AHEAD OF SAID FOOT RETAINING MEANS, (3) A REAR HYDRO-FOIL MEMBER DEPENDING FROM SAID SKI AT A LOCATION REMOTE FROM THE REAR END THEREOF BUT BEHIND SAID FOOT RETAINING MEANS, (4) CONNECTING MEANS JOINING SAID FRONT AND REAR HYDROFOIL MEMBERS TO SAID SKI,
Claim 2
Dependent Claim
86 words
A WATER SKI ADAPTED TO SUPPORT A PERSON STANDING THEREON, INCLUDING (1) A FOOT RETAINING MEANS MOUNTED ON THE UPPER SURFACE OF SAID SKI, (2) A FRONT HYDRO-FOIL MEMBER DEPENDING FROM SAID SKI AT A LOCATION REMOTE FROM THE FRONT END THEREOF BUT AHEAD OF SAID FOOT RETAINING MEANS, (3) A REAR HYDRO-FOIL MEMBER DEPENDING FROM SAID SKI AT A LOCATION REMOTE FROM THE REAR END THEREOF BUT BEHIND SAID FOOT RETAINING MEANS, (4) CONNECTING MEANS JOINING SAID FRONT AND REAR HYDROFOIL MEMBERS TO SAID SKI,
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |