US3268031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable stepladder
Assignee: Individual
•
Filing: 1964-09-22
•
Granted: 1966-08-23
•
Expires: 1984-09-22
Abstract
No abstract record available.
Inventors
- 👤 James L Hampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:08
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/08; E06C7/082; E06C7/084; E06C1/00; E06C1/02; E06C1/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A STEPLADDER INCLUDING A PAIR OF FRONT LEGS, MEANS ON THE INTERIOR OPPOSED SURFACES OF SAID LEGS DEFINING A PLURALITY OF BAYONET TYPE SLOTS RUNNING A EQUALLY SPACED INTERVALS ALONG SUBSTANTIALLY THE ENTIRE LENGTH OF SAID LEGS; AND AT LEAST ONE STEP HAVING PAIRS OF VERTICALLY SPACED PROJECTIONS EXTENDING FROM OPPOSITE ENDS ADAPTED TO BE RECEIVED IN SELECTED PAIRS OF SAID BAYONET TYPE SLOTS IN EACH OPPOSED SURFACE OF SAID LEGS, RESPECTIVELY, TO SUP-
Claim 2
Dependent Claim
75 words
IN A STEPLADDER INCLUDING A PAIR OF FRONT LEGS, MEANS ON THE INTERIOR OPPOSED SURFACES OF SAID LEGS DEFINING A PLURALITY OF BAYONET TYPE SLOTS RUNNING A EQUALLY SPACED INTERVALS ALONG SUBSTANTIALLY THE ENTIRE LENGTH OF SAID LEGS; AND AT LEAST ONE STEP HAVING PAIRS OF VERTICALLY SPACED PROJECTIONS EXTENDING FROM OPPOSITE ENDS ADAPTED TO BE RECEIVED IN SELECTED PAIRS OF SAID BAYONET TYPE SLOTS IN EACH OPPOSED SURFACE OF SAID LEGS, RESPECTIVELY, TO SUP-
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |