Patent US1006109A successfully refreshed from Google Patents.
Patent US3020386A successfully refreshed from Google Patents.
US3020386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heaters
Assignee: Individual
•
Filing: 1959-06-10
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Granted: 1962-02-06
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Expires: 1979-06-10
Abstract
No abstract record available.
Inventors
- 👤 Naxon Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:08
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; H05B3/50; F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1359400A
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US1479494A
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US1554614A
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US1578530A
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US1737912A
Cited
US1784528A
Cited
US2110621A
Cited
US2425088A
Cited
GB630747A
Cited
US2769248A
Cited
US2920864A
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 |