Patent US3388926A successfully refreshed from Google Patents.
US3388926A
Expired / Lapsed
US
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Wheelchair steering apparatus
Assignee: CHARLES R SMITH JR
•
Filing: 1966-06-06
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Granted: 1968-06-18
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 George P Bardsley
- 👤 Larry R Questad
- 👤 John F Mason
- 👤 John R Sondeno
- 👤 Jr Charles R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:59
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1051; A61G5/12; A61G5/128; A61G7/00; A61G7/05; A61G7/0528; A61G2200/00; A61G2200/10; A61G2200/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304790A
Cited
US997439A
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US1509215A
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US2368142A
Cited
US3017199A
Cited
US3042131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |