US2659588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace
Assignee: Individual
•
Filing: 1951-03-23
•
Granted: 1953-11-17
•
Expires: 1971-03-23
Abstract
No abstract record available.
Inventors
- 👤 Blanchard Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:45
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/22; F27B7/24; Y; Y10; Y10S; Y10S277/00; Y10S277/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1703635A
Cited
US1397501A
Cited
US1769905A
Cited
US1980891A
Cited
US2107439A
Cited
GB517520A
Cited
US2469078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |