US2796016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baseboard diffuser
Assignee: HART AND COOLEY Manufacturing CO
•
Filing: 1954-03-12
•
Granted: 1957-06-18
•
Expires: 1974-03-12
Abstract
No abstract record available.
Inventors
- 👤 Roo William C De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:45
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2027097A
Cited
FR853964A
Cited
US2355629A
Cited
US2395233A
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US2516871A
Cited
US2627800A
Cited
US2656156A
Cited
US2662747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |