US2995931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic sampler
Assignee: Sivalls Tanks Inc
•
Filing: 1957-07-12
•
Granted: 1961-08-15
•
Expires: 1977-07-12
Abstract
No abstract record available.
Inventors
- 👤 Charles R Perry
- 👤 Harold F Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:51
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/20; G01N1/2035; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR750018A
Cited
US2452143A
Cited
US2598535A
Cited
US2652847A
Cited
US2760511A
Cited
US2764017A
Cited
US2693114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |