Patent US2920623A successfully refreshed from Google Patents.
US2920623A
Expired / Lapsed
US
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Pocket oxygen dispenser
Assignee: Individual
•
Filing: 1957-08-26
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Granted: 1960-01-12
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Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Holt Jerome James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:14
CPC Classifications
A; A61; A61M; A61M13/00; A62; A62B; A62B7/00; A61M2202/00; A61M2202/02; A61M2202/0208; A61M2205/00; A61M2205/82; A61M2205/8218; A61M2205/8225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |