Patent US2647636A successfully refreshed from Google Patents.
US2647636A
Expired / Lapsed
US
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Unloading header fitting and strainer
Assignee: Individual
•
Filing: 1948-09-21
•
Granted: 1953-08-04
•
Expires: 1968-09-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Rafferty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:32
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/023; Y; Y10; Y10S; Y10S411/00; Y10S411/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US540274A
Cited
US751918A
Cited
FR507459A
Cited
GB375013A
Cited
US2326903A
Cited
US2281448A
Cited
US2464579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |