US687384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dirt-trap for steam-heating systems.
Assignee: AMERICAN STEAM HEATING SPECIALTY Co
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Filing: 1901-05-14
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Granted: 1901-11-26
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Expires: 1921-05-14
Abstract
No abstract record available.
Inventors
- 👤 Millard P Osbourn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:17
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/31; B01D29/35; B01D35/00; B01D35/30
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) | 1904-11-25 | 1905-05-27 | 1905-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-11-25 | 1909-05-27 | 1909-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-11-25 | 1913-05-27 | 1913-11-26 | $7700.00 | Window Closed / Lapsed |