US3457912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand exercising device
Assignee: CLARK ASS Inc
•
Filing: 1967-01-03
•
Granted: 1969-07-29
•
Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Myron L Clark
- 👤 David G Young Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:26
CPC Classifications
A; A61; A61H; A61H1/00; A61H1/02; A61H1/0274; A61H1/0285; A61H1/0288
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |