US2909058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring and controlling the composition of vapor
Assignee: BURTON Manufacturing Co
•
Filing: 1954-11-08
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Granted: 1959-10-20
•
Expires: 1974-11-08
Abstract
No abstract record available.
Inventors
- 👤 Gerald L Hassler
- 👤 Warren William
- 👤 John S Egan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:56
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/56; G01N25/66; G01N25/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23287E
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GB591542A
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US2566307A
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US2662393A
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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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |