US3061273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive steam flow control in condensers
Assignee: Ingersoll Rand Co
•
Filing: 1958-05-19
•
Granted: 1962-10-30
•
Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert C Dean
- 👤 Shavit Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:02
CPC Classifications
F; F28; F28B; F28B1/00; F28B1/02; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/202; Y10S165/203
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB261437A
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DE444484C
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US1662186A
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US1927095A
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US1855231A
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US2830797A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |