US2574022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filling and draining attachment for tanks
Assignee: Parker Appliance Co
•
Filing: 1948-12-13
•
Granted: 1951-11-06
•
Expires: 1968-12-13
Abstract
No abstract record available.
Inventors
- 👤 Carl P Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:01
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/07; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7361; Y10T137/7368; Y10T137/7371; Y10T137/7378; Y10T137/7722; Y10T137/7781; Y10T137/7834
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US269886A
Cited
US295691A
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US506145A
Cited
US696135A
Cited
US703805A
Cited
FR347338A
Cited
US2143204A
Cited
US2211237A
Cited
US2384628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |