Petri dish
Abstract
Abstract A CONTAINER FOR THE CULTURING OF MICRO-ORGANISMS COMPRISES A TRANSPARENT COVER MEMBER WHICH INCLUDES A SUB STANTIALLY FLAT TOP PORTION WHICH MERGES INTO A CONTINUOUS DEPENDING SIDE WALL, AND A TRANSPARENT BODY MEMBER HAVING A SUBSTANTIALLY FLAT BOTTOM PORTION MERGING INTO AN UPSTANDING CYLINDRICAL WALL PORTION WHICH CARRIES ON ITS OUTER SURFACE AN OUTWARDLY EXTENDING PERIPHERAL FLANGE PROVIDED WITH A PLURALITY OF INWARDLY EXTENDING SLOTS, SAID FLANGE BEING SPACED UPWARD FROM THE BOTTOM PORTION AND AWAY FROM THE LOWER EDGE OF SAID COVER SIDE WALL, THE OUTER EDGE OF SAID FLANGE EXTENDING BEYOND THE EXTERIOR OF SAID COVER SIDE WALL TO PERMIT GRASPING OF THE FLANGE BY THE FINGERS.
Inventors
- 👤 Noel L Buterbaugh
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |