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US2955645A
Expired / Lapsed
US
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Combined step and stool
Assignee: Individual
•
Filing: 1958-12-22
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Granted: 1960-10-11
•
Expires: 1978-12-22
Abstract
No abstract record available.
Inventors
- 👤 Harold W Cramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:02
CPC Classifications
A; A47; A47C; A47C12/00; A47C12/02; A47B; A47B91/00; A47B91/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1447145A
Cited
US1788391A
Cited
US1759424A
Cited
US1870309A
Cited
US1933602A
Cited
US2176551A
Cited
US2613389A
Cited
US2665742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |