US2933097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic siphonic washing apparatus
Assignee: BELRAY CHEMICAL Co Inc
•
Filing: 1957-02-04
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Granted: 1960-04-19
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Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Richheimer Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:04
CPC Classifications
B; B01; B01L; B01L13/00; B01L13/02; B01L3/00; B01L3/02; B01L3/021; B01L3/0213; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/2842; Y10T137/2917
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |