Patent US3035374A successfully refreshed from Google Patents.
US3035374A
Expired / Lapsed
US
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Sill leakage preventing device
Assignee: Individual
•
Filing: 1960-02-18
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Granted: 1962-05-22
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Expires: 1980-02-18
Abstract
No abstract record available.
Inventors
- 👤 Burris R Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:44
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/7654
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US332491A
Cited
US1317471A
Cited
US1390951A
Cited
US1830831A
Cited
US2191704A
Cited
US2238022A
Cited
US2890499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |