US3608215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Footwear
Assignee: Individual
•
Filing: 1969-09-16
•
Granted: 1971-09-28
•
Expires: 1989-09-16
Abstract
Abstract A HOLLOW MAIN BODY IS PROVIDED FOR USE AS A WEDGE TYPE SANDAL OR AS A SOLE OR INSOLE OF A SHOE. THE MAIN BODY IS INTEGRALLY FORMED OF PLASTIC AND IS PROVIDED WITH A HOLLOW INTERNAL CHAMBER SURROUNDED BY AN UPPER WALL, SIDE WALLS AND A LOWER WALL. THE UPPER WALL IS PREFERABLY THINNER THAN THE SIDE WALLS AND LOWER WALL, AND THE HOLLOW CHAMBER PROVIDES A COMFORTABLE CUSHION EFFECT TO THE WEARER. THE MAIN BODY MAY BE FORMED BY BLOW MOLDING, SPLASH MOLDING, OR THE LIKE.
Inventors
- 👤 Tatsuo Fukuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:53
CPC Classifications
C; C08; C08B; C08B9/00; C08B9/04; A; A43; A43B; A43B13/00; A43B13/14; A43B13/18; A43B13/20; A43B3/00; A43B3/10; A43B3/108; A43B7/00; A43B7/06; B; B29; B29C; B29C49/00; B29C49/02; B29C49/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |