Patent US3068532A successfully refreshed from Google Patents.
US3401918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable hand rail
Assignee: Individual
•
Filing: 1967-01-30
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Granted: 1968-09-17
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Wiese Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:30
CPC Classifications
E; E04; E04H; E04H3/00; E04H3/10; E04H3/12; E04H3/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US522817A
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US937710A
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US1784107A
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US2593336A
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US2611422A
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US2517959A
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US2933149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |