US3020384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual radiant heater
Assignee: Individual
•
Filing: 1959-04-20
•
Granted: 1962-02-06
•
Expires: 1979-04-20
Abstract
No abstract record available.
Inventors
- 👤 Maxwell K Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:49
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0227; H05B1/0252; H05B1/0275; H05B1/0277; F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; F24H3/0411
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1071716A
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US1295416A
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US1539734A
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US1671568A
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US1888497A
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US2065760A
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US2205001A
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US2176586A
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US2226061A
Cited
US2471784A
Cited
GB627865A
Cited
US2724044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |