Patent US3189124A successfully refreshed from Google Patents.
US3189124A
Expired / Lapsed
US
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Ladder
Assignee: Individual
•
Filing: 1963-11-29
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Granted: 1965-06-15
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Rateau Marcel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:28
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/423; E06C1/00; E06C1/02; E06C1/14; E06C1/16; E06C1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A LADDER COMPRISING A STRAIGHT LADDER SECTION, STABILIZING ARMS, FIRST LINK MEANS ARTICULATELY INTERCONNECTED AT OPPOSITE ENDS THEREOF WITH A MIDPORTION OF SAID STRAIGHT SECTION AND WITH THE UPPER ENDS OF SAID STABILIZING ARMS, THE LENGTH OF SAID FIRST LINK MEANS BEING SUCH THAT IN ONE POSITION OF SAID LINK MEANS WHEN SAID LINK MEANS EXTENDS DOWNWARDLY FROM SAID STRAIGHT SECTION THE UPPER ENDS OF SAID STABILIZING ARMS CONTACT A LOWER PORTION OF SAID STRAIGHT SECTION, AND SECOND LINK MEANS ARTICULARLY INTERCONNECTING THE BASE OF SAID STRAIGHT SECTION AND A PORTION OF SAID STABILIZING ARMS BELOW SAID UPPER ENDS.
Claim 2
Dependent Claim
99 words
A LADDER COMPRISING A STRAIGHT LADDER SECTION, STABILIZING ARMS, FIRST LINK MEANS ARTICULATELY INTERCONNECTED AT OPPOSITE ENDS THEREOF WITH A MIDPORTION OF SAID STRAIGHT SECTION AND WITH THE UPPER ENDS OF SAID STABILIZING ARMS, THE LENGTH OF SAID FIRST LINK MEANS BEING SUCH THAT IN ONE POSITION OF SAID LINK MEANS WHEN SAID LINK MEANS EXTENDS DOWNWARDLY FROM SAID STRAIGHT SECTION THE UPPER ENDS OF SAID STABILIZING ARMS CONTACT A LOWER PORTION OF SAID STRAIGHT SECTION, AND SECOND LINK MEANS ARTICULARLY INTERCONNECTING THE BASE OF SAID STRAIGHT SECTION AND A PORTION OF SAID STABILIZING ARMS BELOW SAID UPPER ENDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |