US3053435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid pressure controlling apparatus
Assignee: Individual
•
Filing: 1959-08-04
•
Granted: 1962-09-11
•
Expires: 1979-08-04
Abstract
No abstract record available.
Inventors
- 👤 Walter E Sanders
- 👤 Jr Richard Hopper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:30
CPC Classifications
E; E03; E03B; E03B11/00; E03B11/02; E03B11/06; F; F01; F01L; F01L21/00; F01L21/04; F01L23/00; F04; F04B; F04B9/00; F04B9/08; F04B9/10; F04B9/103; F04B9/105; F04D; F04D13/00; F04D13/16; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/3137
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US547519A
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GB191009763A
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US1674614A
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FR625141A
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US2231307A
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US2318782A
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US2478116A
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US2658485A
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US2652973A
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US2698710A
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US2752087A
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US2862478A
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US2863600A
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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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |