Patent US3470351A successfully refreshed from Google Patents.
US3470351A
Expired / Lapsed
US
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Electric baseboard heaters
Assignee: Edwin L Wiegand Co
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Filing: 1965-03-22
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Granted: 1969-09-30
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Harry C Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:53
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/32; F; F24; F24H; F24H3/00; F24H3/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1335483A
Cited
GB489850A
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US2268233A
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FR972074A
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US2668220A
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US2912661A
Cited
FR1230451A
Cited
US3051816A
Cited
US3305665A
Cited
US3009044A
Cited
US3189727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |