US3343520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Animal cage filter cover
Assignee: Becton Dickinson and Co
•
Filing: 1965-06-03
•
Granted: 1967-09-26
•
Expires: 1985-06-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:40
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/02; A01K1/035; A01K1/03; A01K1/031
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A SELF-SUPPORTING FILTER COVER OF PREDETERMINED CONFIGURATION FOR PLACEMENT ON AN OPEN TOP TRAY OF AN ANIMAL CAGE, SAID FILTER COVER BEING CONSTRUCTED AND ARRANGED TO FILTER AIR-BONE VIRUS AND DISEASE TRANSMITTING PARTICLES, SAID FILTER COVER BEING CONSTRUCTED OF RELATIVELY THIN AIR AND GAS PERVIOUS IMPERFORATE SHEET MATERIAL, SAID SHEET MATERIAL BEING OF RELATIVELY LOW STRUCTURAL STRENGTH, INTEGRAL STRENGTHENING MEANS FORMING PART OF SAID FILTER COVER FOR RIGIDIFYING SAID SHEET IN THE PREDETERMINED CONFIGURATIN, SAID FILTER COVER HAVING A RAISED TOP AND A DOWNWARDLY DEPENDING SIDE MEANS PROVIDING AN APRON, SAID APRON HAVING A LOWER EDGE ADAPTED TO SEALABLY RECEIVE THE OPEN TOP ANIMAL HOLDING TRAY AND FORM A SEAL WITH THE TOP THEREOF, AND THE TOP AND APRON OF SAID FILTER COVER CO-
Claim 2
Dependent Claim
124 words
A SELF-SUPPORTING FILTER COVER OF PREDETERMINED CONFIGURATION FOR PLACEMENT ON AN OPEN TOP TRAY OF AN ANIMAL CAGE, SAID FILTER COVER BEING CONSTRUCTED AND ARRANGED TO FILTER AIR-BONE VIRUS AND DISEASE TRANSMITTING PARTICLES, SAID FILTER COVER BEING CONSTRUCTED OF RELATIVELY THIN AIR AND GAS PERVIOUS IMPERFORATE SHEET MATERIAL, SAID SHEET MATERIAL BEING OF RELATIVELY LOW STRUCTURAL STRENGTH, INTEGRAL STRENGTHENING MEANS FORMING PART OF SAID FILTER COVER FOR RIGIDIFYING SAID SHEET IN THE PREDETERMINED CONFIGURATIN, SAID FILTER COVER HAVING A RAISED TOP AND A DOWNWARDLY DEPENDING SIDE MEANS PROVIDING AN APRON, SAID APRON HAVING A LOWER EDGE ADAPTED TO SEALABLY RECEIVE THE OPEN TOP ANIMAL HOLDING TRAY AND FORM A SEAL WITH THE TOP THEREOF, AND THE TOP AND APRON OF SAID FILTER COVER CO-
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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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |