US3248302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petri dishes
Assignee: Individual
•
Filing: 1963-04-23
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Granted: 1966-04-26
•
Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 Melba H Mackin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:46
CPC Classifications
B; B65; B65D; B65D53/00; B65D53/02; C; C12; C12M; C12M23/00; C12M23/02; C12M23/10; C12M23/20; C12M23/26; C12M23/38; C12M23/46; Y; Y10; Y10S; Y10S435/00; Y10S435/801
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
THE COMBINATION OF A RECEPTACLE HAVING AN UPPER PERIPHERAL EDGE, A LID ADAPTED TO LOOSELY FIT OVER SAID EDGE AND INCLUDING A PERIPHERAL, OVERHANGING SIDEWALL, AND MEANS FOR SEALING THE LID TO THE RECEPTABLE RESPONSIVE TO RELATIVE AXIAL CLOSING MOVEMENT OF ON AGAINST THE OTHER, SAID MEANS COMPRISING A SEALING FLANGE OF THIN ELASTIC MATERIAL UNDER TENSION EXTENDING AS A FREE-STANDING MEMBRANE FROM SAID LID SIDE WALL IN RADIAL INWARD DIRECTION INTO THE INTERIOR OF SAID LID AND THUS IN THE PATH OF RELATIVE MOVEMENT OF THE RECEPTACLE UPPER EDGE INTO THE LID TAKING PLACE WHEN THE RECEPTACLE AND LID MOVE AGAINST ONE ANOTHER, THE MATERIAL OF SAID FLANGE BEING OF A NATURE AS TO PERMIT SAID UPPER EDGE TO SINK INTO THE FLANGE WHICH RESULTS IN SAID FLANGE BEING FURTHER TENSIONED BY AND THEREUPON FRICTIONALLY SECURING ITSELF AIR-TIGHT TO SAID UPPER EDGE.
Claim 2
Dependent Claim
143 words
THE COMBINATION OF A RECEPTACLE HAVING AN UPPER PERIPHERAL EDGE, A LID ADAPTED TO LOOSELY FIT OVER SAID EDGE AND INCLUDING A PERIPHERAL, OVERHANGING SIDEWALL, AND MEANS FOR SEALING THE LID TO THE RECEPTABLE RESPONSIVE TO RELATIVE AXIAL CLOSING MOVEMENT OF ON AGAINST THE OTHER, SAID MEANS COMPRISING A SEALING FLANGE OF THIN ELASTIC MATERIAL UNDER TENSION EXTENDING AS A FREE-STANDING MEMBRANE FROM SAID LID SIDE WALL IN RADIAL INWARD DIRECTION INTO THE INTERIOR OF SAID LID AND THUS IN THE PATH OF RELATIVE MOVEMENT OF THE RECEPTACLE UPPER EDGE INTO THE LID TAKING PLACE WHEN THE RECEPTACLE AND LID MOVE AGAINST ONE ANOTHER, THE MATERIAL OF SAID FLANGE BEING OF A NATURE AS TO PERMIT SAID UPPER EDGE TO SINK INTO THE FLANGE WHICH RESULTS IN SAID FLANGE BEING FURTHER TENSIONED BY AND THEREUPON FRICTIONALLY SECURING ITSELF AIR-TIGHT TO SAID UPPER EDGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |