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US3035573A
Expired / Lapsed
US
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Oxygen mask and helmet retention assembly
Assignee: Sierra Engineering Co
•
Filing: 1958-07-21
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Granted: 1962-05-22
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Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Jr William D Morton
- 👤 Orland W Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:35
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/08; A62B18/084; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/43; Y10S24/44; Y10T; Y10T24/00; Y10T24/45; Y10T24/45005; Y10T24/45037; Y10T24/45063; Y10T292/00; Y10T292/42; Y10T292/444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2882896A
Cited
US2867812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |