US2007001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extended surface convector
Assignee: Individual
•
Filing: 1934-03-02
•
Granted: 1935-07-02
•
Expires: 1954-03-02
Abstract
No abstract record available.
Inventors
- 👤 William E Oakey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:28
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/05316; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
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) | 1938-07-01 | 1938-12-31 | 1939-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-07-01 | 1942-12-31 | 1943-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-07-01 | 1946-12-31 | 1947-07-02 | $7700.00 | Window Closed / Lapsed |