US1374491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction-augmenting device for vacuum feeding systems
Assignee: Individual
•
Filing: 1919-12-22
•
Granted: 1921-04-12
•
Expires: 1939-12-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Coulombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:14
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/02; Y; Y10; Y10S; Y10S261/00; Y10S261/12
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) | 1924-04-11 | 1924-10-11 | 1925-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-04-11 | 1928-10-11 | 1929-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-04-11 | 1932-10-11 | 1933-04-12 | $7700.00 | Window Closed / Lapsed |