Patent US1751877A successfully refreshed from Google Patents.
US1751877A
Expired / Lapsed
US
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Drain trap
Assignee: Individual
•
Filing: 1929-05-10
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Granted: 1930-03-25
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Expires: 1949-05-10
Abstract
No abstract record available.
Inventors
- 👤 William B Nance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:15
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/28; E03C1/29; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4463; Y10T137/4553
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) | 1933-03-24 | 1933-09-23 | 1934-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-24 | 1937-09-23 | 1938-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-24 | 1941-09-23 | 1942-03-25 | $7700.00 | Window Closed / Lapsed |