US2588192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial respiration apparatus
Assignee: Individual
•
Filing: 1947-02-01
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Granted: 1952-03-04
•
Expires: 1967-02-01
Abstract
No abstract record available.
Inventors
- 👤 John D Akerman
- 👤 Vernon G Townsend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:38
CPC Classifications
A; A61; A61H; A61H9/00; A61H9/005; A61H9/0078; A61H31/00; A61H31/004; A61H31/006; A61H2201/00; A61H2201/12; A61H2201/1238; A61H2201/16; A61H2201/1602; A61H2201/165; A61H2205/00; A61H2205/08
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) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |