Patent US2625587A successfully refreshed from Google Patents.
Patent US3070692A successfully refreshed from Google Patents.
US3070692A
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US
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Sewage sludge density measuring apparatus
Assignee: Ohmart Corp
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Filing: 1960-02-19
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Granted: 1962-12-25
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Expires: 1980-02-19
Abstract
No abstract record available.
Inventors
- 👤 Philip E Ohmart
- 👤 Jr Henry L Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:00
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/12; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7736; Y10T137/7758; Y10T137/7761
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB398722A
Cited
US2661550A
Cited
US2763790A
Cited
US2722609A
Cited
US2737592A
Cited
US2951156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |