US2865112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing orifice for steam tubes and the like
Assignee: Dow Chemical Co
•
Filing: 1955-11-16
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Granted: 1958-12-23
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Expires: 1975-11-16
Abstract
No abstract record available.
Inventors
- 👤 Richard J Annesser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:49
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/001; D; D02; D02J; D02J1/00; D02J1/22; D02J1/222; D02J13/00; D02J13/001; D06; D06B; D06B23/00; D06B23/14; D06B23/18; Y; Y10; Y10S; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US890252A
Cited
US1487362A
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US2317448A
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US2228272A
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US2299145A
Cited
US2509279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |