Patent US2341347A successfully refreshed from Google Patents.
Patent US2321108A successfully refreshed from Google Patents.
US1768718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Percussive device
Assignee: Westinghouse Electric Corp
•
Filing: 1927-07-27
•
Granted: 1930-07-01
•
Expires: 1947-07-27
Abstract
No abstract record available.
Inventors
- 👤 Soderberg Carl Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:54
CPC Classifications
B; B25; B25D; B25D11/00; B25D11/06; B25D11/064; H; H02; H02K; H02K33/00; H02K33/02; H02K33/04; H02K33/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1933-06-30 | 1933-12-30 | 1934-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-06-30 | 1937-12-30 | 1938-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-06-30 | 1941-12-30 | 1942-07-01 | $7700.00 | Window Closed / Lapsed |