Patent US2400330A successfully refreshed from Google Patents.
US2400330A
Expired / Lapsed
US
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Controlling device
Assignee: Ingersoll Rand Co
•
Filing: 1943-08-27
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Granted: 1946-05-14
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Expires: 1963-08-27
Abstract
No abstract record available.
Inventors
- 👤 Roy O Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:25
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/16; B21J15/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/87016
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) | 1949-05-13 | 1949-11-12 | 1950-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-05-13 | 1953-11-12 | 1954-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-05-13 | 1957-11-12 | 1958-05-14 | $7700.00 | Window Closed / Lapsed |