US2693940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baseboard radiator
Assignee: Individual
•
Filing: 1951-10-13
•
Granted: 1954-11-09
•
Expires: 1971-10-13
Abstract
No abstract record available.
Inventors
- 👤 Carl M Preisinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:11
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL44433C
Cited
US1818226A
Cited
US1914199A
Cited
US1957702A
Cited
US2053127A
Cited
US2587410A
Cited
US2531117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |