US2898937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary valve structure
Assignee: Miehle Goss Dexter Inc
•
Filing: 1955-02-23
•
Granted: 1959-08-11
•
Expires: 1975-02-23
Abstract
No abstract record available.
Inventors
- 👤 Leo C Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:44
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86493; Y10T137/86558; Y10T137/86566; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US932585A
Cited
US1207769A
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DE552778C
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US1949875A
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US2047615A
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US2127679A
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GB536370A
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US2398542A
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US2345073A
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US2616655A
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US2467512A
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US2477975A
Cited
US2610147A
Cited
US2693932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |