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US4916724A
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Bitewing X-ray film holders
Assignee: Individual
•
Filing: 1989-07-13
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Granted: 1990-04-10
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Expires: 2009-07-13
Abstract
Abstract A bite wing x-ray film holder includes at least one packet of liquid food product that is adapted to release that food product into the patient's mouth during the x-ray procedure.
Inventors
- 👤 Trudy Kilber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:24
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/042
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
A bitewing x-ray film holder comprising: (A) a backing plate element adapted to hold a dental x-ray film adjacent to a patient's upper and lower molars; (B) a tab element adapted to be held between occlusal surfaces of the patient's upper and lower molars; and (C) a means on said tab element and containing a liquid product and being openable upon insertion into the patient's mouth by action of the patient's mouth to release the liquid product into the patient's mouth during a bitewing x-ray procedure.
Claim 2
Dependent Claim
86 words
A bitewing x-ray film holder comprising: (A) a backing plate element adapted to hold a dental x-ray film adjacent to a patient's upper and lower molars; (B) a tab element adapted to be held between occlusal surfaces of the patient's upper and lower molars; and (C) a means on said tab element and containing a liquid product and being openable upon insertion into the patient's mouth by action of the patient's mouth to release the liquid product into the patient's mouth during a bitewing x-ray procedure.
Claim 3
Dependent Claim
15 words
The bitewing x-ray film holder defined in claim 1 wherein said means includes a packet.
Claim 4
Dependent Claim
21 words
The bitewing x-ray film holder defined in claim 2 wherein said packet is rupturable by pressure exerted by the patient's teeth.
Claim 5
Dependent Claim
15 words
The bitewing x-ray film holder defined in claim 3 further including a plurality of packets.
Claim 6
Dependent Claim
18 words
The bitewing x-ray film holder defined in claim 2 wherein said packet is embedded in said tab element.
Claim 7
Dependent Claim
20 words
The bitewing x-ray film holder defined in claim 5 further including a plurality of packets embedded in said tab element.
References Cited (Backward Citations)
US2084092A
Cited
US3444371A
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US3936643A
Cited
US4489427A
Cited
US4707847A
Cited
US4721209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |