US3457570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sink strainer assembly
Assignee: Delve Inc
•
Filing: 1967-08-30
•
Granted: 1969-07-29
•
Expires: 1987-08-30
Abstract
No abstract record available.
Inventors
- 👤 Robert M Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:11
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/24; E03C1/244
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US302110A
Cited
US313068A
Cited
US346579A
Cited
US1370170A
Cited
US930845A
Cited
FR740464A
Cited
CH216637A
Cited
US2756078A
Cited
US3281869A
Cited
FR1430190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |