US1828284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibratory system
Assignee: Westinghouse Electric Corp
•
Filing: 1927-11-07
•
Granted: 1931-10-20
•
Expires: 1947-11-07
Abstract
No abstract record available.
Inventors
- 👤 Clinton R Hanna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/02; H04R7/12; H04R7/14; H04R9/00; H04R9/02; H04R9/06; H04R2209/00; H04R2209/021; H04R9/025
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) | 1934-10-19 | 1935-04-20 | 1935-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-19 | 1939-04-20 | 1939-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-19 | 1943-04-20 | 1943-10-20 | $7700.00 | Window Closed / Lapsed |