US2845934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use in cleaning the interiors of barrels
Assignee: PORTLAND Co
•
Filing: 1953-04-29
•
Granted: 1958-08-05
•
Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 Payson Richard Conant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:20
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/093; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737; Y10T137/8593
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1939836A
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US1891592A
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US2161131A
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US2240364A
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US2443721A
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US2454289A
Cited
US2526265A
Cited
US2763274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |