Patent US2043352A successfully refreshed from Google Patents.
US2043352A
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Rotation mechanism
Assignee: Ingersoll Rand Co
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Filing: 1936-01-16
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Granted: 1936-06-09
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Expires: 1956-01-16
Abstract
No abstract record available.
Inventors
- 👤 George W Hulshizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:53
CPC Classifications
E; E21; E21B; E21B6/00; E21B6/06; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1527; Y10T74/1558; Y10T74/21; Y10T74/2133; Y10T74/2136; Y10T74/214
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) | 1939-06-09 | 1939-12-09 | 1940-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-06-09 | 1943-12-09 | 1944-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-06-09 | 1947-12-09 | 1948-06-09 | $7700.00 | Window Closed / Lapsed |