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Patent US3493503A successfully refreshed from Google Patents.
US3493503A
Expired / Lapsed
US
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Method of producing a protein-free fluid
Assignee: Haematronics Inc
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Filing: 1967-05-19
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Granted: 1970-02-03
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Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 Morris Mass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:24
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/491; G01N33/50; G01N33/66; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25375
Claims Analysis
Total Claims: 0
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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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |