US3468307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittent positive pressure breathing apparatus
Assignee: CARLETON CONTROLS CORP
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Filing: 1966-10-26
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Granted: 1969-09-23
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Expires: 1986-10-26
Abstract
No abstract record available.
Inventors
- 👤 Richard D Cummins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:36
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/105; A61M16/106; A61M16/107; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/7722; Y10T137/7754
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA623226A
Cited
US2483698A
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US2908270A
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US2870763A
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US3234932A
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US3138152A
Cited
US3307542A
Cited
US3362404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |