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Patent US3262447A successfully refreshed from Google Patents.
US3262447A
Expired / Lapsed
US
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Respirator for laryngectomies
Assignee: Individual
•
Filing: 1961-12-01
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Granted: 1966-07-26
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Expires: 1981-12-01
Abstract
No abstract record available.
Inventors
- 👤 Edward P Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:24
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0465; A61M16/047; A61M16/10; A61M16/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317947A
Cited
US1288856A
Cited
GB379381A
Cited
US2024601A
Cited
US2235624A
Cited
US2584450A
Cited
US2791216A
Cited
US2837090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |