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US814788A
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US
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Sewer valve or trap.
Assignee: PERFECT SEWER TRAP Manufacturing Co
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Filing: 1904-09-10
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Granted: 1906-03-13
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Expires: 1924-09-10
Abstract
No abstract record available.
Inventors
- 👤 Philip F Lenhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:56
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4463; Y10T137/4471; Y10T137/4478; Y10T137/4493; Y10T137/7504; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7903; Y10T137/8593; Y10T137/86292; Y10T137/863
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) | 1909-03-12 | 1909-09-11 | 1910-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-03-12 | 1913-09-11 | 1914-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-03-12 | 1917-09-11 | 1918-03-13 | $7700.00 | Window Closed / Lapsed |