Patent US3398830A successfully refreshed from Google Patents.
US3398830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain guard
Assignee: Individual
•
Filing: 1965-12-06
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Granted: 1968-08-27
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Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Holger W Hornquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:31
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/08; E03; E03F; E03F5/00; E03F5/14; E04D2013/086; E04D2013/0866
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US232820A
Cited
US644262A
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US810879A
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US1074375A
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US1204756A
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US1230024A
Cited
US1504233A
Cited
US2449731A
Cited
US2669358A
Cited
US2787499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |