US2957620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor head assembly
Assignee: Automatic Power Inc
•
Filing: 1957-08-19
•
Granted: 1960-10-25
•
Expires: 1977-08-19
Abstract
No abstract record available.
Inventors
- 👤 Turnwald Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:02
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/02; F04B49/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191327046A
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US1580434A
Cited
US1553323A
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US1692265A
Cited
US1611678A
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US1719572A
Cited
US1918247A
Cited
US2000735A
Cited
US2084670A
Cited
FR812820A
Cited
CH234640A
Cited
US2525619A
Cited
DE809841C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |