Patent US3467093A successfully refreshed from Google Patents.
US3467093A
Expired / Lapsed
US
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Oxygen mask and valve structure
Assignee: TEXACE Corp A CORP OF TEX
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Filing: 1966-12-09
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Granted: 1969-09-16
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Expires: 1986-12-09
Abstract
No abstract record available.
Inventors
- 👤 Leo F Hotz
- 👤 Orland W Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:16
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/02; A62B18/08; A62B18/10
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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |