US3486515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorbers for crutches
Assignee: Individual
•
Filing: 1968-06-03
•
Granted: 1969-12-30
•
Expires: 1988-06-03
Abstract
No abstract record available.
Inventors
- 👤 Stavro A Chrysostomides
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:24
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/02; A61H3/0277
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US665439A
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US834205A
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US1336844A
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US1464057A
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US1753065A
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US2398534A
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US2426594A
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US2478667A
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US2856943A
Cited
GB880960A
Cited
US3304946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |