Patent US5540706A successfully refreshed from Google Patents.
US714724A
Expired / Lapsed
US
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Hot-air casing for heating systems.
Assignee: BAKER SMITH AND Co
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Filing: 1901-07-30
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Granted: 1902-12-02
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Expires: 1921-07-30
Abstract
No abstract record available.
Inventors
- 👤 Edward J Mallen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:21
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/001; F28F9/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1905-12-01 | 1906-06-02 | 1906-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-12-01 | 1910-06-02 | 1910-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-12-01 | 1914-06-02 | 1914-12-02 | $7700.00 | Window Closed / Lapsed |