US1680673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core for radiators
Assignee: Fedders Manufacturing Co Inc
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Filing: 1925-11-07
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Granted: 1928-08-14
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Expires: 1945-11-07
Abstract
No abstract record available.
Inventors
- 👤 John M Fedders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:30
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/32; F28F1/325
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) | 1931-08-14 | 1932-02-13 | 1932-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-14 | 1936-02-13 | 1936-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-14 | 1940-02-13 | 1940-08-14 | $7700.00 | Window Closed / Lapsed |