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US2912552A
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US
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Apparatus for heating
Assignee: Max Baermann GmbH
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Filing: 1957-01-31
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Granted: 1959-11-10
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Expires: 1977-01-31
Abstract
No abstract record available.
Inventors
- 👤 Baermann Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:08
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/12; H05B6/1209; F; F24; F24V; F24V99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB167545A
Cited
GB609718A
Cited
US2566274A
Cited
US2481172A
Cited
US2527237A
Cited
US2753474A
Cited
US2769932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |