US3436157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color and surface structure comparator
Assignee: Individual
•
Filing: 1966-04-08
•
Granted: 1969-04-01
•
Expires: 1986-04-08
Abstract
No abstract record available.
Inventors
- 👤 Hans Adler
- 👤 Norman Horowitz
- 👤 Philip Spigner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:28
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6801; A61B5/6813; A61B5/6814; A61B5/682; A61B5/0059; A61B5/0082; A61B5/0088; G; G01; G01J; G01J3/00; G01J3/46; G01J3/463; G01J3/50; G01J3/508
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A DENTAL COLOR AND SURFACE STRUCTURE COMPARATOR, COMPRISING: A LIGHT SOURCE, A COLOR GUIDE, AND AN OPTICAL SYSTEM; MEANS FOR POSITIONING SAID COLOR GUIDE FOR EXPOSURE TO SAID LIGHT SOURCE AND OPTICAL SYSTEM; MEANS FOR POSITIONING A DENTAL SPECIMEN FOR EXPOSURE TO SAID LIGHT SOURCE AND OPTICAL SYSTEM;
Claim 2
Dependent Claim
48 words
A DENTAL COLOR AND SURFACE STRUCTURE COMPARATOR, COMPRISING: A LIGHT SOURCE, A COLOR GUIDE, AND AN OPTICAL SYSTEM; MEANS FOR POSITIONING SAID COLOR GUIDE FOR EXPOSURE TO SAID LIGHT SOURCE AND OPTICAL SYSTEM; MEANS FOR POSITIONING A DENTAL SPECIMEN FOR EXPOSURE TO SAID LIGHT SOURCE AND OPTICAL SYSTEM;
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |