Patent US2818638A successfully refreshed from Google Patents.
US2818638A
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Flocking method for sealing joints
Assignee: Hoover Co
•
Filing: 1951-03-16
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Granted: 1958-01-07
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Expires: 1971-03-16
Abstract
No abstract record available.
Inventors
- 👤 Werner G Seck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:12
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/108; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/4998; Y10T29/49982; Y10T29/49986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1270841A
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GB247282A
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US1772912A
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GB397952A
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US2008476A
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US2087260A
Cited
GB492537A
Cited
US2251211A
Cited
US2313750A
Cited
US2604318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |