US3672745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bevelled edge microscope slide
Assignee: Propper Manufacturing Co Inc
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Filing: 1970-06-29
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Granted: 1972-06-27
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Expires: 1990-06-29
Abstract
Abstract A MICROSCOPE SLIDE HAVING PERIPHERAL SIDE AND END EDGES OR PERIPHERAL END EDGES WHICH ARE BEVELLED WITH A BEVELLED END EDGE OF THE SLIDE OPERATIVE FOR SMEARING OF A SPECIMEN ON THE FACE OF ANOTHER COMPANION SLIDE. THE BEVELLED SLIDE EDGES ARE STRUCTURED TO PROVIDE A WAVY CONFIGURATION TO FACILITATE GRASPING OF THE SLIDE FOR THE SMEARING OPERATION.
Inventors
- 👤 Irving A Speelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:58
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |