US3503479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus and method for rotating elements
Assignee: Ingersoll Rand Co
•
Filing: 1968-04-09
•
Granted: 1970-03-31
•
Expires: 1988-04-09
Abstract
No abstract record available.
Inventors
- 👤 Fred Canova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:53
CPC Classifications
F; F15; F15B; F15B5/00; F15B5/003; G; G01; G01P; G01P1/00; G01P1/07; G01P1/08; G01P1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2646814A
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US2900468A
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US3042767A
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US3109948A
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US2982902A
Cited
US3216252A
Cited
US3260456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |