US2931355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for automatically presenting a breathing mask to a person in an emergency
Assignee: Avox Systems Inc
•
Filing: 1957-06-24
•
Granted: 1960-04-05
•
Expires: 1977-06-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Miller
- 👤 Norman C Koester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:27
CPC Classifications
A; A62; A62B; A62B11/00; B; B64; B64D; B64D11/00; B64D2231/00; B64D2231/02; B64D2231/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE666020C
Cited
US2185997A
Cited
US2323674A
Cited
US2306382A
Cited
US2408704A
Cited
US2774352A
Cited
US2809633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |