US3397883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorized combined invalid walker and lift device
Assignee: Kiehn Products Co
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Filing: 1965-09-27
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Granted: 1968-08-20
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Expires: 1985-09-27
Abstract
No abstract record available.
Inventors
- 👤 Kiehn Mogens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:24
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1013; A61G7/1017; A61G7/104; A61G7/1046; A61H; A61H3/00; A61H3/04; A61G2200/00; A61G2200/30; A61G2200/34; A61G2200/36; A61G2200/50; A61G2200/52; A61G7/1001; A61G7/1003; A61H2003/043; A61H2003/046; A61H2201/00; A61H2201/16; A61H2201/1602; A61H2201/1614
Claims Analysis
Total Claims: 0
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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) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |