US3403722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling apparatus and process
Assignee: Stone and Webster Engineering Corp
•
Filing: 1966-06-13
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Granted: 1968-10-01
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Herman N Woebcke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:17
CPC Classifications
F; F28; F28F; F28F9/00; B; B01; B01D; B01D51/00; B01D51/10; C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; F28D; F28D7/00; F28D7/0008; F28D7/005; F28D7/10; F28D7/103; F28D7/12; F28D7/16; F28D7/163; F28D7/1638; C10G2400/00; C10G2400/20; F28D21/00; F28D2021/0019; F28D2021/0075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2475025A
Cited
US3144080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |