US2559992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extension ladder
Assignee: Individual
•
Filing: 1946-04-26
•
Granted: 1951-07-10
•
Expires: 1966-04-26
Abstract
No abstract record available.
Inventors
- 👤 Jr John L Painter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:23
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/04; E06C1/08; E06C1/12; E06C1/125
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE144733C
Cited
US229472A
Cited
US356088A
Cited
US428995A
Cited
US675744A
Cited
US657932A
Cited
US873110A
Cited
US1944382A
Cited
US2016196A
Cited
US2186181A
Cited
US2296367A
Cited
US2542398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |