US2825327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical breathing apparatus
Assignee: Electronic & X Ray Appliances
•
Filing: 1954-11-22
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Granted: 1958-03-04
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Expires: 1974-11-22
Abstract
No abstract record available.
Inventors
- 👤 Tunnicliffe Edward Alber James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:05
CPC Classifications
A; A61; A61H; A61H31/00; A61H31/02; 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)
DE565434C
Cited
US1087942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |