US3208555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoisting attachment for a ladder
Assignee: Individual
•
Filing: 1964-05-19
•
Granted: 1965-09-28
•
Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 Fred C Fry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:14
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/18; E04F21/1805; E04F21/1811
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
A HOISTING APPARATUS FOR INSTALLATION ON A STEPLADDER, SAID APPARATUS COMPRISING A SUPPORTING FRAMEWORK RESTING ON THE TOP STEP OF THE STEPLADDER, AN ELEVATING STRUCTURE HAVING VERTICALK MEMBERS POSITIONED OUTWARDLY OF THE ENDS OF SAID TOP STEP AND GUIDED BY SAID FRAMEWORK FOR VERTICAL MOVEMENT IN A PLANE EXTENDING THROUGH THE TOP STEP OF THE STEPLADDER, ELEVATING MEANS CONNECTED TO SAID FRAMEWORK AND ELEVATING STRUCTURE FOR CONTROLLING THE VERTICAL MOVEMENT OF THE ELEVATING STRUCTURE RELATIVE TO THE FRAMEWORK AND FOR TRANSFERRING THE WEIGHT OF SAID ELEVATING STRUCTURE TO THE TOP STEP OF SAID LADDER, AND SELECTIVELY RELEASABLE MEANS TO HOLD THE ELEVATING STRUCTURE IN POSITION RELATIVE TO SAID FRAMEWORK.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |