US3556633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Specimen carrying slide with runoff trough
Assignee: Individual
•
Filing: 1969-01-17
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Granted: 1971-01-19
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Expires: 1989-01-17
Abstract
Abstract A SPECIMEN CARRYING SLIDE SUCH AS USED IN LABORATORIES FOR MOUNTING SPECIMENS OF TISSUE TO BE EXAMINED UNDER A MICROSCOPE TAKES THE FORM OF A MOLDED TRANSPARENT PLASTIC BODY MEMBER HAVING A FLAT RECTANGULAR CAVITY OCCUPYING A MAJORITY OF ITS SURFACE AREA. A STEPPED SHOULDER SURROUNDS THE CAVITY IN WHICH THE SPECIMEN IS MOUNTED AND A VERY THIN TRANSPARENT PLASTIC COVER SLIP IS POSITIONED ON THE STEPPED SHOULDER SO AS TO FORM A COVER FOR THE SPECIMEN POSITIONED IN THE FLAT RECTANGULAR CAVITY. A PORTION OF THE STEPPED SHOULDER IS CUT AWAY IN ONE OF THE CORNERS THEREOF TO FORM A TROUGH OR RUNOFF POINT SO THAT EXCESS FLUID ON THE SPECIMEN MAY BE ACCOMMODATED.
Inventors
- 👤 Winifred Liu Mutschmann
- 👤 Nicholas J Fish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:18
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34
Claims Analysis
Total Claims: 0
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |