US3393665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support tie for tubular walls of a furnace and adjacent tube bank
Assignee: Combustion Engineering Inc
•
Filing: 1966-12-14
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Granted: 1968-07-23
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Expires: 1986-12-14
Abstract
No abstract record available.
Inventors
- 👤 Charles D Juchtern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:27
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/007; F28F9/013; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; F22B37/202; F22B37/36; F22B37/365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |