US3508575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid supply apparatus
Assignee: Dowty Fuel Systems Ltd
•
Filing: 1968-11-05
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Granted: 1970-04-28
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Expires: 1988-11-05
Abstract
No abstract record available.
Inventors
- 👤 Keith Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:38
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/24; F02; F02C; F02C9/00; F02C9/26; F02C9/263; F04C14/26; F04D; F04D15/00; F04D15/0005; F04D15/0022; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/8593; Y10T137/85978; Y10T137/85986; Y10T137/86002; Y10T137/86019; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |