US3529631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curved channels through which a gas or vapour flows
Assignee: Individual
•
Filing: 1969-06-04
•
Granted: 1970-09-22
•
Expires: 1989-06-04
Abstract
No abstract record available.
Inventors
- 👤 Gilbert Riollet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:08
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/141; F01D5/142; F01D5/143; F01D5/145; F01D9/00; F01D9/02; F05; F05D; F05D2250/00; F05D2250/70; F05D2250/71; Y; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 0
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US3000401A
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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) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |