Patent US3109646A successfully refreshed from Google Patents.
US3109646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballet stretch device
Assignee: Individual
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Filing: 1961-09-22
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Granted: 1963-11-05
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Expires: 1981-09-22
Abstract
No abstract record available.
Inventors
- 👤 Klein Helene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:31
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/04; A63B23/0482; A63B23/0488
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
135 words
AN EXERCISING DEVICE FOR BALLET DANCERS COMPRISING, A BASE ADAPTED TO BE POSITIONED ON THE FLOOR, SAID BASE ADAPTED TO RECEIVE THE USER''S FEET ON TOP THEREOF TO HOLD SAID BASE ON THE FLOOR WHEN THE DEVICE IS IN USE, A PAIR OF SUBSTANTIALLY STRAIGHT AND PARALLEL GROOVES ON THE TOP OF SAID BASE, A STANDARD SUPPORTED ON SAID BASE SUBSTANTIALLY VERTICAL TO THE PLANE OF THE BOTTOM OF SAID BASE, A CROSSPIECE ON AND ARRANGED SUBSTANTIALLY AT RIGHT ANGLES TO SAID STANDARD AND ADAPTED TO REST ON THE KNEES OF THE USER OF THE DEVICE WHEN THE DEVICE IS IN OPERATION, A KNEEPAD ON EACH END OF SAID CROSSPIECE, AND MEANS FOR POSITIONING SAID CROSSPIECE ON SAID STANDARD AND FOR PRESSING SAID CROSSPIECE DOWNWARDLY ON THE USER''S KNEES IN THE DIRECTION OF SAID BASE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |