US3420224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for analysis of respired gas
Assignee: Bioconsultants Inc
•
Filing: 1967-06-13
•
Granted: 1969-01-07
•
Expires: 1987-06-13
Abstract
No abstract record available.
Inventors
- 👤 Andrew F Farr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:23
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/08; A61B5/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US464543A
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US869932A
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US1869443A
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US2795223A
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US2867511A
Cited
US3253592A
Cited
US3181529A
Cited
US3196689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |