Patent US2865816A successfully refreshed from Google Patents.
US2865816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the assay of viable microorganisms
Assignee: Individual
•
Filing: 1956-09-18
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Granted: 1958-12-23
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Expires: 1976-09-18
Abstract
No abstract record available.
Inventors
- 👤 Stefanye David
- 👤 Jule N Dews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:35
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/10; C12M23/44; C12M29/00; C12M29/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A DILUTION APPARATUS COMPRISING A SERIES OF SEALED MAIN VOLUMETRIC STAGES, INTERMEDIATE SMALLER SUBSTAGES CONNECTED IN SERIES WITH SAID MAIN STAGES AND HAVING VALVED INLET AND OUTLET CONNECTIONS BETWEEN STAGES, EACH
Claim 2
Dependent Claim
31 words
A DILUTION APPARATUS COMPRISING A SERIES OF SEALED MAIN VOLUMETRIC STAGES, INTERMEDIATE SMALLER SUBSTAGES CONNECTED IN SERIES WITH SAID MAIN STAGES AND HAVING VALVED INLET AND OUTLET CONNECTIONS BETWEEN STAGES, EACH
References Cited (Backward Citations)
US1043361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |