Patent US3476404A successfully refreshed from Google Patents.
US3476404A
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US
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Wheelchair lift
Assignee: METAL DYNAMICS CORP
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Filing: 1967-11-08
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Granted: 1969-11-04
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Expires: 1987-11-08
Abstract
No abstract record available.
Inventors
- 👤 Isadore B Rachman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:07
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/10; A61G15/12; A61G15/125; A61G3/00; A61G3/02; A61G3/06; A61G3/063; A61G5/00; A61G5/10; A61G5/104; A61G5/1054; A61G5/12; A61G5/121; A61G5/125; A61G5/128; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE241250C
Cited
US482520A
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US2733825A
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US2899093A
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GB661558A
Cited
US3036723A
Cited
US3186759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |