Patent US3893720A successfully refreshed from Google Patents.
Patent US3002502A successfully refreshed from Google Patents.
US3002502A
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US
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Regulating apparatus associated with hydraulic servo-control and follow-up acting devices
Assignee: Individual
•
Filing: 1958-02-12
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Granted: 1961-10-03
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Expires: 1978-02-12
Abstract
No abstract record available.
Inventors
- 👤 Szydlowski Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:42
CPC Classifications
G; G05; G05D; G05D13/00; Y; Y10; Y10S; Y10S60/00; Y10S60/906; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671
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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |