Patent US2783027A successfully refreshed from Google Patents.
US3400712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for intermittently dispensing oxygen or other gas suitable for breathing
Assignee: Individual
•
Filing: 1965-08-12
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Granted: 1968-09-10
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Expires: 1985-08-12
Abstract
No abstract record available.
Inventors
- 👤 James E Finan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0666; A61M16/021; A61M16/0672; A61M16/0677; A61M16/0003; A61M2016/0015; A61M2016/0018; A61M2016/0024
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |