US2464736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical expansible chamber rotary motor or pump of the axially moving sliding vane type
Assignee: HPM Development Corp
•
Filing: 1943-04-28
•
Granted: 1949-03-15
•
Expires: 1963-04-28
Abstract
No abstract record available.
Inventors
- 👤 George A Waldie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:32
CPC Classifications
F; F04; F04C; F04C3/00; F04C3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US13930A
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CH45379A
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GB191109689A
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US2040178A
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US2087772A
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GB485660A
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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) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |