US2979077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic system
Assignee: STAR PARTS Inc
•
Filing: 1957-03-14
•
Granted: 1961-04-11
•
Expires: 1977-03-14
Abstract
No abstract record available.
Inventors
- 👤 Carl F Swenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:44
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/32; F; F16; F16K; F16K17/00; F16K17/02; F16K17/168; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7774; Y10T137/7777; Y10T137/7781; Y10T137/7835
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |