US3059722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding combination step ladder and stool
Assignee: Individual
•
Filing: 1960-12-16
•
Granted: 1962-10-23
•
Expires: 1980-12-16
Abstract
No abstract record available.
Inventors
- 👤 Rouse Calvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:39
CPC Classifications
A; A47; A47C; A47C12/00; A47C12/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US396828A
Cited
US1222673A
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US1556172A
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US2098826A
Cited
US2777503A
Cited
US2952301A
Cited
US2871075A
Cited
US2975856A
Cited
US3011585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |