Patent US3072402A successfully refreshed from Google Patents.
US3072402A
Expired / Lapsed
US
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Duplex apparatus for skipping and jumping rope
Assignee: Individual
•
Filing: 1961-10-11
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Granted: 1963-01-08
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Expires: 1981-10-11
Abstract
No abstract record available.
Inventors
- 👤 Edward E Mccombs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:02
CPC Classifications
A; A63; A63B; A63B5/00; A63B5/20; A63B2208/00; A63B2208/12; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A DUPLEX APPLIANCE FOR PRACTICING ROPE JUMPING COMPRISING A PAIR OF SPACED SIDE MEMBERS OF PLURAL POLYETHYLENE TUBING EACH SIDE MEMBER HAVING AN INTERMEDIATE OUTER TUBE AND ADJUSTABLY SEATED IN OPPOSITE ENDS THEREOF INNER TUBES OF SIMILAR MATERIL, A TRANSVERSE TUBULAR POLYETHYLENE DRIVE SHAFT HAVING ITS ENDS UNITED TO THE INTERMEDIATE TUBES AT THE MIDDLE THEREOF, AND PARALLEL TRANS-
Claim 2
Dependent Claim
59 words
A DUPLEX APPLIANCE FOR PRACTICING ROPE JUMPING COMPRISING A PAIR OF SPACED SIDE MEMBERS OF PLURAL POLYETHYLENE TUBING EACH SIDE MEMBER HAVING AN INTERMEDIATE OUTER TUBE AND ADJUSTABLY SEATED IN OPPOSITE ENDS THEREOF INNER TUBES OF SIMILAR MATERIL, A TRANSVERSE TUBULAR POLYETHYLENE DRIVE SHAFT HAVING ITS ENDS UNITED TO THE INTERMEDIATE TUBES AT THE MIDDLE THEREOF, AND PARALLEL TRANS-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |