Patent US1873741A successfully refreshed from Google Patents.
Patent US2476383A successfully refreshed from Google Patents.
US2476383A
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US
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Planetary piston displacement mechanism
Assignee: Individual
•
Filing: 1945-12-22
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Granted: 1949-07-19
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Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 John O Porteous
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:37
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/30; F04C18/34; F04C18/356; F04C18/3562; F04C18/3564
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1623315A
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US1983997A
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US879213A
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US1526449A
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US1681392A
Cited
US1906142A
Cited
US2018341A
Cited
US2187730A
Cited
US2335284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |