US3293389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves for hydraulic systems
Assignee: Individual
•
Filing: 1964-01-27
•
Granted: 1966-12-20
•
Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 Bhicknapahar Erika Elfried Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:48
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/28; B60T11/32; B60T11/323; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7726; Y10T137/7727; Y10T137/7837; Y10T137/7869; Y10T137/7875
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1098670A
Cited
DE399416C
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US1518461A
Cited
US1840180A
Cited
DE588807C
Cited
US2821995A
Cited
US2965730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |