Patent US2611622A successfully refreshed from Google Patents.
US2611622A
Expired / Lapsed
US
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Oxygen tank cart
Assignee: Individual
•
Filing: 1950-07-28
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Granted: 1952-09-23
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Expires: 1970-07-28
Abstract
No abstract record available.
Inventors
- 👤 Irwin A Kernkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:38
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/08; F17C13/084; F17C13/085; B; B62; B62B; B62B3/00; B62B3/10; B62B3/104; B62B2202/00; B62B2202/02; B62B2202/022; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0119; F17C2201/03; F17C2201/032; F17C2205/00; F17C2205/01; F17C2205/0103; F17C2205/0107; F17C2205/0153; F17C2205/0157; F17C2205/0161; F17C2221/00; F17C2221/01; F17C2221/011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE561907C
Cited
US1063620A
Cited
US2316938A
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US2396368A
Cited
US2509240A
Cited
US2570504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |