US2549093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexibly mounted and connected vertical gas heating furnace
Assignee: Sulzer AG
•
Filing: 1946-09-07
•
Granted: 1951-04-17
•
Expires: 1966-09-07
Abstract
No abstract record available.
Inventors
- 👤 Huber Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:29
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/26; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1669
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB221188A
Cited
US1597479A
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US1626772A
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GB297509A
Cited
US1740318A
Cited
US1833871A
Cited
US1794336A
Cited
US1750824A
Cited
US1933743A
Cited
US1982010A
Cited
US2385177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |