Patent US3012255A successfully refreshed from Google Patents.
US3012255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guard fence assembly
Assignee: INVALID WALKER AND WHEEL CHAIR CO
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Filing: 1958-05-05
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Granted: 1961-12-12
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Expires: 1978-05-05
Abstract
No abstract record available.
Inventors
- 👤 James L Diehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:31
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/0507; A47; A47C; A47C21/00; A47C21/08; A61G7/0508; A61G7/0509; A61G7/0512; A61G7/0513; A61G7/0514; A61G7/0515; A61G7/0516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US957422A
Cited
US1475537A
Cited
US2048955A
Cited
US2811726A
Cited
FR1105989A
Cited
US2817856A
Cited
US2871490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |