US2687037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring proportions of materials
Assignee: CONVEYOR Co Inc
•
Filing: 1951-03-30
•
Granted: 1954-08-24
•
Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 Walter E Saxe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:54
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US591657A
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US830976A
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GB290913A
Cited
US1749606A
Cited
US2291771A
Cited
US2343000A
Cited
US2336130A
Cited
US2467300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |