US2875946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical breathing apparatus
Assignee: ELECTRONIC AND X RAY APPLIC LT
•
Filing: 1956-09-13
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Granted: 1959-03-03
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Expires: 1976-09-13
Abstract
No abstract record available.
Inventors
- 👤 Tunnicliffe Edward Alber James
- 👤 Densham Coston Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:02
CPC Classifications
A; A61; A61H; A61H31/00; A61H31/02; A61H2031/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1194583A
Cited
USRE23015E
Cited
US728526A
Cited
US2088044A
Cited
US2235138A
Cited
US2526212A
Cited
US2626601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |