US2662744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel heating system and integral tube and clip for use therein
Assignee: Burgess-Manning Co
•
Filing: 1949-10-12
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Granted: 1953-12-15
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Expires: 1969-10-12
Abstract
No abstract record available.
Inventors
- 👤 Leadbbetter Ralph Leon
- 👤 Alfred S Chipley
- 👤 Charles P Certik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:35
CPC Classifications
F; F24; F24D; F24D3/00; F24D3/12; F24D3/16; F24D3/165; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |