US2992974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biological testing device
Assignee: Individual
•
Filing: 1960-04-04
•
Granted: 1961-07-18
•
Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Allan S Belcove
- 👤 Santow Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:09
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN AN AGAR-SLANT-TYPE BIOLOGICAL TESTING CONTAINER, THE IMPROVEMENT COMPRISING, IN COMBINATION, AN ENCLOSED CONTAINER WITH AN AGAR-SLANT LAYER ALONG ONE WALL THEREOF, AN AMOUNT OF LIQUID NUTRIENT BROTH IN THE CONTAINER, AND A GAS SPACE IN SAID CONTAINER, A GAS IN THE CONTAINER AT A PRESSURE REDUCED BELOW ATMOSPHERIC PRESSURE, AND LAYER-ENGAGING MEANS DEFINED ON THE INNER WALLS OF SAID CONTAINER COOPERATING WITH SAID AGAR-SLANT LAYER TO INCREASE THE FORCES TENDING TO RETAIN THE AGAR-SLANT LAYER AGAINST SAID ONE WALL OF THE CONTAINER, FOR KEEPING THE AGAR-SLANT LAYER AGAINST SAID WALL OF THE CONTAINER AGAINST THE FORCES, INCLUDING THE REDUCED GAS PRESSURE WITHIN THE CONTAINER, WHICH TEND TO SEPARATE THE AGAR-SLANT LAYER FROM THE WALLS OF THE CONTAINER.
Claim 2
Dependent Claim
118 words
IN AN AGAR-SLANT-TYPE BIOLOGICAL TESTING CONTAINER, THE IMPROVEMENT COMPRISING, IN COMBINATION, AN ENCLOSED CONTAINER WITH AN AGAR-SLANT LAYER ALONG ONE WALL THEREOF, AN AMOUNT OF LIQUID NUTRIENT BROTH IN THE CONTAINER, AND A GAS SPACE IN SAID CONTAINER, A GAS IN THE CONTAINER AT A PRESSURE REDUCED BELOW ATMOSPHERIC PRESSURE, AND LAYER-ENGAGING MEANS DEFINED ON THE INNER WALLS OF SAID CONTAINER COOPERATING WITH SAID AGAR-SLANT LAYER TO INCREASE THE FORCES TENDING TO RETAIN THE AGAR-SLANT LAYER AGAINST SAID ONE WALL OF THE CONTAINER, FOR KEEPING THE AGAR-SLANT LAYER AGAINST SAID WALL OF THE CONTAINER AGAINST THE FORCES, INCLUDING THE REDUCED GAS PRESSURE WITHIN THE CONTAINER, WHICH TEND TO SEPARATE THE AGAR-SLANT LAYER FROM THE WALLS OF THE CONTAINER.
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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |