US2677749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant heating system
Assignee: Pyle National Co
•
Filing: 1949-10-29
•
Granted: 1954-05-04
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Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 George K Raider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:25
CPC Classifications
F; F24; F24D; F24D3/00; F24D3/12; F24D3/16; F24D3/165; F24D13/00; F24D13/04; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1880877A
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US2044729A
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US1997559A
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US2172771A
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US2181436A
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US2251682A
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CH212604A
Cited
US2382340A
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US2405839A
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US2486791A
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US2509607A
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US2615115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |