US3402407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain cover
Assignee: Individual
•
Filing: 1966-12-09
•
Granted: 1968-09-24
•
Expires: 1986-12-09
Abstract
No abstract record available.
Inventors
- 👤 Edythe D Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:23
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/26; E03C1/262; E03C1/22; E03C1/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US673762A
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US1081434A
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US1758270A
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US1918509A
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US1961277A
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US2443649A
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US2518205A
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US2756078A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |