Patent JPS5126213A successfully refreshed from Google Patents.
US1942570A
Expired / Lapsed
US
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Method and apparatus for removing liquids and gases from manholes, pits, and the like
Assignee: Chicago Pneumatic Tool Co LLC
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Filing: 1930-08-08
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Granted: 1934-01-09
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Expires: 1950-08-08
Abstract
No abstract record available.
Inventors
- 👤 Melvin C Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/04; F04D13/046
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) | 1937-01-08 | 1937-07-10 | 1938-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-08 | 1941-07-10 | 1942-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-08 | 1945-07-10 | 1946-01-09 | $7700.00 | Window Closed / Lapsed |