US3137941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extra-oral dental retractor
Assignee: Individual
•
Filing: 1961-05-31
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Granted: 1964-06-23
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Expires: 1981-05-31
Abstract
No abstract record available.
Inventors
- 👤 Lawrence F Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:59
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
AN ORTHODONTIC APPLIANCE COMPRISING A FIRST USHAPED SPRING WIRE MEMBER ADAPTED TO BE POSITIONED IN FRONT OF A WEARER''S MOUTH, SAID FIRST MEMBER HAVING ENDS ADAPTED TO BE ATTACHED TO A HEAD STRAP AT THE REAR OF A WEARER''S HEAD, SAID FIRST MEMBER HAVING AT LEAST ONE COIL SPRING IN THE CENTER PORTION THEREOF, A SECOND U-SHAPED MEMBER FIXEDLY ATTACHED TO SAID FIRST U-SHAPED MEMBER AT THE CENTER PORTIONS OF EACH, SAID SECOND U-SHAPED MEMBER DISPOSED WITHIN SAID FIRST U-SHAPED MEMBER IN A FIRST PLANE OF VIEW, SAID FIRST AND SECOND U-SHAPED MEMBERS FORMING AN ACUTE ANGLE IN A SECOND PLANE OF VIEW, SAID FIRST AND SECOND PLANES OF VIEW BEING AT RIGHT ANGLES TO EACH OTHER, SAID SECOND U-SHAPED MEMBER ADAPTED TO FIT WITHIN A WEARER''S MOUTH AROUND A WEARER''S TEETH.
Claim 2
Dependent Claim
132 words
AN ORTHODONTIC APPLIANCE COMPRISING A FIRST USHAPED SPRING WIRE MEMBER ADAPTED TO BE POSITIONED IN FRONT OF A WEARER''S MOUTH, SAID FIRST MEMBER HAVING ENDS ADAPTED TO BE ATTACHED TO A HEAD STRAP AT THE REAR OF A WEARER''S HEAD, SAID FIRST MEMBER HAVING AT LEAST ONE COIL SPRING IN THE CENTER PORTION THEREOF, A SECOND U-SHAPED MEMBER FIXEDLY ATTACHED TO SAID FIRST U-SHAPED MEMBER AT THE CENTER PORTIONS OF EACH, SAID SECOND U-SHAPED MEMBER DISPOSED WITHIN SAID FIRST U-SHAPED MEMBER IN A FIRST PLANE OF VIEW, SAID FIRST AND SECOND U-SHAPED MEMBERS FORMING AN ACUTE ANGLE IN A SECOND PLANE OF VIEW, SAID FIRST AND SECOND PLANES OF VIEW BEING AT RIGHT ANGLES TO EACH OTHER, SAID SECOND U-SHAPED MEMBER ADAPTED TO FIT WITHIN A WEARER''S MOUTH AROUND A WEARER''S TEETH.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |