Patent US2930880A successfully refreshed from Google Patents.
US2930880A
Expired / Lapsed
US
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Self-contained baseboard heating unit
Assignee: MEIER ELECTRIC AND MACHINE COM
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Filing: 1957-07-01
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Granted: 1960-03-29
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Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Charles E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:28
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US460725A
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US2799763A
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US2175144A
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US2460625A
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US2521540A
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US2502147A
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US2608634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |