US2893237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dew point indicator
Assignee: Surface Combustion Corp
•
Filing: 1955-05-11
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Granted: 1959-07-07
•
Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 Coriolis Ernest G De
- 👤 Arthur W Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:05
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
Cited
US2281418A
Cited
US2435895A
Cited
US2415776A
Cited
US2455966A
Cited
US2651511A
Cited
US2723840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |