Patent US807672A successfully refreshed from Google Patents.
Patent US1489529A successfully refreshed from Google Patents.
US1489529A
Expired / Lapsed
US
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Radiator with removable sections
Assignee: EDWARD T CURRAN
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Filing: 1920-12-30
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Granted: 1924-04-08
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Expires: 1940-12-30
Abstract
No abstract record available.
Inventors
- 👤 Hey Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:37
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/03; F28D1/0358; F28D1/04; F28D1/053; F28D1/05316; F28D1/05333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-04-08 | 1927-10-08 | 1928-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-04-08 | 1931-10-08 | 1932-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-04-08 | 1935-10-08 | 1936-04-08 | $7700.00 | Window Closed / Lapsed |