US2641271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid proportioner
Assignee: Bowser Inc
•
Filing: 1951-02-13
•
Granted: 1953-06-09
•
Expires: 1971-02-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Pressler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:39
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/74; B67D7/741; B67D7/742; G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2024478A
Cited
US2024479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |