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US1908612A
Expired / Lapsed
US
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Revolving plunger pump and compressor
Assignee: Individual
•
Filing: 1932-04-07
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Granted: 1933-05-09
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Expires: 1952-04-07
Abstract
No abstract record available.
Inventors
- 👤 Sven A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:14
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/122; F04B1/124; F04B1/126; F04B1/2014; F04B1/2021; F04B1/2078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-05-08 | 1936-11-07 | 1937-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-05-08 | 1940-11-07 | 1941-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-05-08 | 1944-11-07 | 1945-05-09 | $7700.00 | Window Closed / Lapsed |