US2772673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial respiration apparatus
Assignee: CONITECH Ltd
•
Filing: 1952-06-18
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Granted: 1956-12-04
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Expires: 1972-06-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Huxley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:27
CPC Classifications
A; A61; A61H; A61H31/00; A61H31/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2383821A
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US2227847A
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US2287939A
Cited
US2309470A
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US2360476A
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US2466108A
Cited
US2490395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |