US1390829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of regulating blowing-engines
Assignee: RATEAU BATTU SMOOT ENGINEERING
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Filing: 1920-10-25
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Granted: 1921-09-13
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Expires: 1940-10-25
Abstract
No abstract record available.
Inventors
- 👤 Charles H Smoot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:11
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/005; Y; Y10; Y10T; Y10T137/00; Y10T137/0318
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) | 1924-09-12 | 1925-03-14 | 1925-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-09-12 | 1929-03-14 | 1929-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-09-12 | 1933-03-14 | 1933-09-13 | $7700.00 | Window Closed / Lapsed |