US2809100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion analyzer
Assignee: Laboratory Equipment Corp
•
Filing: 1951-05-12
•
Granted: 1957-10-08
•
Expires: 1971-05-12
Abstract
No abstract record available.
Inventors
- 👤 George J Krasl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:32
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/02; G01N33/00; G01N33/20; G01N33/202; G01N33/2022; G01N33/2025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US773529A
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US2072791A
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US2224044A
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US2332943A
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US2336075A
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US2382301A
Cited
US2424376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |