US3225451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piggyback pocket level
Assignee: Individual
•
Filing: 1963-02-18
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Granted: 1965-12-28
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Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 Andrew S Olexson
- 👤 Eugene P Olexson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:55
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A LEVELING DEVICE, COMPRISING A PAIR OF FLAT RECTANGULAR PLATES MADE OF MAGNETIC MATERIAL, A FLAT RECTANGULAR PERMANENT MAGNET DISPOSED BETWEEN THE PAIR OF PLATES, EACH OF SAID PLATES HAVING AN INVERTED T-SHAPED CUTOUT AT ONE EDGE DEFINING A LONG ARCUATE BOTTOM EDGE AND A PAIR OF OVERHANGING OPPOSED INVERTED L-SHAPED TABS, A TUBULAR SPIRIT LEVEL ENGAGED IN THE CUTOUTS OF THE PLATES BETWEENT THE TABS AND THE LONG BOTTOM EDGES OF THE CUTOUTS; SAID TUBULAR LEVEL HAVING A HOLLOW LONGITUDINALLY ARCUATE BODY WITH RESILIENT ENDS ADJUSTABLY ENGAGED BY THE TABS AND ARCUATE BOTTOM EDGES OF THE CUTOUTS, AND A FLUID INCOMPLETELY FILLING SAID BODY TO PROVIDE AN AIR BUBBLE MOVABLE IN SAID BODY.
Claim 2
Dependent Claim
114 words
A LEVELING DEVICE, COMPRISING A PAIR OF FLAT RECTANGULAR PLATES MADE OF MAGNETIC MATERIAL, A FLAT RECTANGULAR PERMANENT MAGNET DISPOSED BETWEEN THE PAIR OF PLATES, EACH OF SAID PLATES HAVING AN INVERTED T-SHAPED CUTOUT AT ONE EDGE DEFINING A LONG ARCUATE BOTTOM EDGE AND A PAIR OF OVERHANGING OPPOSED INVERTED L-SHAPED TABS, A TUBULAR SPIRIT LEVEL ENGAGED IN THE CUTOUTS OF THE PLATES BETWEENT THE TABS AND THE LONG BOTTOM EDGES OF THE CUTOUTS; SAID TUBULAR LEVEL HAVING A HOLLOW LONGITUDINALLY ARCUATE BODY WITH RESILIENT ENDS ADJUSTABLY ENGAGED BY THE TABS AND ARCUATE BOTTOM EDGES OF THE CUTOUTS, AND A FLUID INCOMPLETELY FILLING SAID BODY TO PROVIDE AN AIR BUBBLE MOVABLE IN SAID BODY.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |