US2724581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid proportioning system
Assignee: Crown Cork and Seal Co Inc
•
Filing: 1951-05-18
•
Granted: 1955-11-22
•
Expires: 1971-05-18
Abstract
No abstract record available.
Inventors
- 👤 Leo F Pahl
- 👤 Ransom C Albrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:45
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; B; B67; B67C; B67C3/00; B67C3/02; B67C3/22; B67D; B67D1/00; B67D1/0015; B67D1/0016; B67D2210/00; B67D2210/00146; B67D2210/00149; B67D2210/00152; B67D2210/00154; Y; Y10; Y10S; Y10S366/00; Y10S366/601
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |