Patent US2457707A successfully refreshed from Google Patents.
US2457707A
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US
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Gas sampling device
Assignee: Continental Can Co Inc
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Filing: 1944-09-09
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Granted: 1948-12-28
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Expires: 1964-09-09
Abstract
No abstract record available.
Inventors
- 👤 Wilbur K Neuman
- 👤 Harry M Slsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:12
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/22; G01N1/2226; G01N2001/2229
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2015079A
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US1993683A
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US2056530A
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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) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |