US3697227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical constituent sampler
Assignee: Westinghouse Electric Corp
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Filing: 1966-05-13
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Granted: 1972-10-10
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Expires: 1986-05-13
Abstract
Abstract A DISPOSABLE SAMPLER FOR TESTING FOR THE PRESENCE OF CONSTITUENTS IN FLUIDS COMPRISING A LAMINATED PACKAGE HAVING A BASE SHEET AND A RETAINER SHEET, THE SHEETS BEING COMPOSED OF RELATIVELY IMPERMEABLE MATERIALS, THE BASE SHEET HAVING A FLUID-HOLDING CHAMER, THE RETAINER SHEET BEING APPLIED TO THE BASE SHEET AND COVERING THE CHAMBER, DETACHABLE OPENING MEANS LEADING TO THE CHAMBER INCLUDING A FLUID INLET IN ONE OF THE SHEETS, AND A COVER SHEET DETACHABLY MOUNTED ON SAID SHEET AND COVERING THE INLET IN A FLUID-TIGHT MANNER.
Inventors
- 👤 Robert P Goldstein
- 👤 Frank R Agnew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |