US2789555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draft hood
Assignee: HOTSTREAM HEATER CO
•
Filing: 1952-07-26
•
Granted: 1957-04-23
•
Expires: 1972-07-26
Abstract
No abstract record available.
Inventors
- 👤 Clarence H Morrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:16
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/0005; F24H9/001; F24H9/0026; F24H9/20; F24H9/2007; F24H9/2035; F24H9/2042
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1069256A
Cited
US1449678A
Cited
US1887575A
Cited
DE531032C
Cited
US1983515A
Cited
GB481720A
Cited
US2190349A
Cited
US2184947A
Cited
US2385450A
Cited
GB569887A
Cited
US2651299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |