Patent US481977A successfully refreshed from Google Patents.
Patent US2663479A successfully refreshed from Google Patents.
US2663479A
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US
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Fluid operated filling valve mechanism utilizing varying fluid pressures
Assignee: Individual
•
Filing: 1949-08-06
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Granted: 1953-12-22
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Expires: 1969-08-06
Abstract
No abstract record available.
Inventors
- 👤 Detrez Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:19
CPC Classifications
B; B67; B67C; B67C3/00; B67C3/02; B67C3/22; B67C3/26; B67C3/2634; B67C3/06; B67C3/16; B67C3/24; B67C3/244
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US773573A
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US1046048A
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US863884A
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US980445A
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US980446A
Cited
US1010692A
Cited
US1132218A
Cited
US1550726A
Cited
US2140187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |