Patent US849989A successfully refreshed from Google Patents.
Patent US2539618A successfully refreshed from Google Patents.
US2539618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration responsive apparatus
Assignee: Individual
•
Filing: 1946-01-15
•
Granted: 1951-01-30
•
Expires: 1966-01-15
Abstract
No abstract record available.
Inventors
- 👤 Walter A Good
- 👤 Wenrich Loran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:27
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/02; G01P3/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1030050A
Cited
US1165082A
Cited
US2008699A
Cited
US1951226A
Cited
US2050073A
Cited
US2361396A
Cited
US2403809A
Cited
US2381645A
Cited
US2422134A
Cited
US2399297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |