US2914067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breathing apparatus
Assignee: FIREWEL IND
•
Filing: 1954-03-01
•
Granted: 1959-11-24
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Expires: 1974-03-01
Abstract
No abstract record available.
Inventors
- 👤 Lois W Meidenbauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:21
CPC Classifications
A; A62; A62B; A62B9/00; A62B9/02; A62B9/022; A62B9/025; A61; A61M; A61M16/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/8733
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB439183A
Cited
US2220368A
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GB500789A
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US2378047A
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US2396716A
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US2436522A
Cited
US2449548A
Cited
US2597039A
Cited
US2608200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |