US1120560A
Expired / Lapsed
US
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Automatic regulating apparatus for electrical precipitation systems.
Assignee: R B MELLON
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Filing: 1913-02-11
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Granted: 1914-12-08
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Expires: 1933-02-11
Abstract
No abstract record available.
Inventors
- 👤 William Walker Strong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/66; B03C3/68
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) | 1917-12-07 | 1918-06-08 | 1918-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-12-07 | 1922-06-08 | 1922-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-12-07 | 1926-06-08 | 1926-12-08 | $7700.00 | Window Closed / Lapsed |