US2981364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding ladder
Assignee: Individual
•
Filing: 1959-07-13
•
Granted: 1961-04-25
•
Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Webber Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:12
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/38; E06C1/383; E06C1/3835
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US864898A
Cited
US958732A
Cited
US1089514A
Cited
US1085563A
Cited
US1267670A
Cited
US2498375A
Cited
US2670120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |