US3352148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test bar for hardness testing machines
Assignee: Individual
•
Filing: 1966-10-07
•
Granted: 1967-11-14
•
Expires: 1986-10-07
Abstract
No abstract record available.
Inventors
- 👤 Johnson John David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:10
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN IMPRESSION TEST APPARATUS COMPRISING A BAR OF METAL HAVING A FLAT FACE AND MEANS ON SAID FACE DELINEATING A PLURALITY OF CONTIGUOUS GEOMETRICAL FIGURES SUBSTANTIALLY COVERING SAID FACE, THE CENTER AREAS OF SAID FIGURES BEING SPACED FROM EACH OTHER A DISTANCE SUCH THAT THE DEFORMATION OF THE METAL IN THE CENTER AREA OF ONE GEOMETRICAL FIGURE BY A PRESELECTED TOOL UNDER A PRESELECTED LOAD WILL DEFORM A SUBSTANTIAL AREA OF EACH FIGURE AND NOT DEFORM THE METAL BEYOND SAID ONE FIGURE, WHEREBY
Claim 2
Dependent Claim
83 words
AN IMPRESSION TEST APPARATUS COMPRISING A BAR OF METAL HAVING A FLAT FACE AND MEANS ON SAID FACE DELINEATING A PLURALITY OF CONTIGUOUS GEOMETRICAL FIGURES SUBSTANTIALLY COVERING SAID FACE, THE CENTER AREAS OF SAID FIGURES BEING SPACED FROM EACH OTHER A DISTANCE SUCH THAT THE DEFORMATION OF THE METAL IN THE CENTER AREA OF ONE GEOMETRICAL FIGURE BY A PRESELECTED TOOL UNDER A PRESELECTED LOAD WILL DEFORM A SUBSTANTIAL AREA OF EACH FIGURE AND NOT DEFORM THE METAL BEYOND SAID ONE FIGURE, WHEREBY
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |