US3259209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder
Assignee: Gulf Oil Corp
•
Filing: 1964-05-07
•
Granted: 1966-07-05
•
Expires: 1984-05-07
Abstract
No abstract record available.
Inventors
- 👤 Charles C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:59
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/38; E06C1/381; E06C9/00; E06C9/02; E06C9/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A DETACHABLE STEP FOR USE IN A LADDER ASSEMBLY, SAID STEP HAVING ONLY A SINGLE HANGER MEANS IN THE FORM OF A U-BEND AND ADAPTED FOR SUPPORTING AN UNBALANCED LOAD SUBSTANTIALLY WITHOUT ROTATIONAL MOVEMENT COMPRISING SHANK MEANS HAVING A U-BEND AT ONE END THEREOF AND LOAD RECEIVING MEANS AT THE OTHER END THEREOF FOR RECEIVING AN UNBALANCED LOAD, STUD MEANS EXTENDING FROM SAID SHANK MEANS AT A INTERMEDIATE POSITION ALONG THE LENGTH THEREOF, SAID STUD MEANS PROJECTING FROM SAID SHANK MEANS ON THE SAME SIDE OF SAID SHANK MEANS AS SAID U-BEND AND ON THE SAME PLANE AS SAID U-BEND, SAID PLANE BEING SUBSTANTIALLY PERPENDICULAR WITH RESPECT TO SAID LOAD RECEIVING MEANS.
References Cited (Backward Citations)
US1073158A
Cited
US1206203A
Cited
US2253847A
Cited
US2915196A
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US2790616A
Cited
US2963166A
Cited
US2949510A
Cited
FR1246916A
Cited
GB934767A
Cited
US3091423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |