Patent US3224809A successfully refreshed from Google Patents.
US3224809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental neck rest
Assignee: Individual
•
Filing: 1964-08-26
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Granted: 1965-12-21
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Expires: 1984-08-26
Abstract
No abstract record available.
Inventors
- 👤 Elbert O Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:16
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/10; A61G15/12; A61G15/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A DENTAL OPERATORY NECK REST STRUCTURE COMPRISING A FLAT RIGID BASE, A TAPERED RESILIENT CUSHION OVERLYING SAID BASE THE THIN EDGE PORTION OF WHICH FORMS THE BOTTOM EDGE OF THE REST AND THE THICKEST PORTION OF WHICH FORMS THE TOP EDGE PORTION OF THE REST, AN OVAL DEPRESSION IN THE TOP SURFACE OF SAID CUSHION BETWEEN SAID TOP AND BOTTOM EDGES, A GROOVE IN THE SURFACE OF SAID CUSHION EXTENDING LONGITUDINALLY THEREOF AND CONNECTING SAID OVAL DEPRESSION AND SAID BOTTOM EDGE OF SAID REST, SAID OVAL DEPRESSION CONFORMING GENERALLY TO THE OCCIPITAL PROTUBERNACE OF A HUMAN SKULL AND SAID GROOVE FOLLOWING A PATH GENERALLY CORRESPONDING TO THE CERVICAL CURVE OF A NORMAL HUMAN SPINE BETWEEN THE SHOULDER AND THE OCCIPITAL PORTION OF THE SKULL, AND AN OVAL OPENING IN SAID BASE DIRECTLY BELOW SAID OVAL DEPRESSION OF SAID CUSHION.
Claim 2
Dependent Claim
139 words
A DENTAL OPERATORY NECK REST STRUCTURE COMPRISING A FLAT RIGID BASE, A TAPERED RESILIENT CUSHION OVERLYING SAID BASE THE THIN EDGE PORTION OF WHICH FORMS THE BOTTOM EDGE OF THE REST AND THE THICKEST PORTION OF WHICH FORMS THE TOP EDGE PORTION OF THE REST, AN OVAL DEPRESSION IN THE TOP SURFACE OF SAID CUSHION BETWEEN SAID TOP AND BOTTOM EDGES, A GROOVE IN THE SURFACE OF SAID CUSHION EXTENDING LONGITUDINALLY THEREOF AND CONNECTING SAID OVAL DEPRESSION AND SAID BOTTOM EDGE OF SAID REST, SAID OVAL DEPRESSION CONFORMING GENERALLY TO THE OCCIPITAL PROTUBERNACE OF A HUMAN SKULL AND SAID GROOVE FOLLOWING A PATH GENERALLY CORRESPONDING TO THE CERVICAL CURVE OF A NORMAL HUMAN SPINE BETWEEN THE SHOULDER AND THE OCCIPITAL PORTION OF THE SKULL, AND AN OVAL OPENING IN SAID BASE DIRECTLY BELOW SAID OVAL DEPRESSION OF SAID CUSHION.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |