Patent US189251A successfully refreshed from Google Patents.
Patent US3829199A successfully refreshed from Google Patents.
US3829199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable dental mirror
Assignee: 3M Co
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Filing: 1972-01-18
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Granted: 1974-08-13
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Expires: 1992-01-18
Abstract
Abstract A disposable dental mirror comprises a plastic base adapted to hold a mirror thereon, the base having on its back side a receiving aperture to provide a removable frictional attachment between the base and a stem from a conventional dental mirror handle; and a mirror attached to the front surface of the base. The disposable mirror greatly minimizes cross-contamination between patients as it is inexpensive and may be conveniently discarded after use.
Inventors
- 👤 F Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:34
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/24; A61B1/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A dental mirror comprising a shank having a mirror releasably attached at one end thereto, said mirror comprising a base having a peripheral portion of generally circular shape, said base having an upper reflecting surface and having means defining a passage having a non-circular cross-sectional configuration extending thereinto beneath said reflecting surface and opening into the peripheral portion of said base, said shank having an end portion thereof with a non-circular cross sectional configuration substantially identical to the cross sectional configuration of said passage and being removably received in said passage, said end portion and the means on said base forming said passage having cooperating means separably interlocking said mirror and said shank to one another, said separably interlocking means comprising a cooperating projection and indentation.
Claim 2
Dependent Claim
126 words
A dental mirror comprising a shank having a mirror releasably attached at one end thereto, said mirror comprising a base having a peripheral portion of generally circular shape, said base having an upper reflecting surface and having means defining a passage having a non-circular cross-sectional configuration extending thereinto beneath said reflecting surface and opening into the peripheral portion of said base, said shank having an end portion thereof with a non-circular cross sectional configuration substantially identical to the cross sectional configuration of said passage and being removably received in said passage, said end portion and the means on said base forming said passage having cooperating means separably interlocking said mirror and said shank to one another, said separably interlocking means comprising a cooperating projection and indentation.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |