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 00:36
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/02; G01P3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1030050A
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US1165082A
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US2008699A
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US1951226A
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US2050073A
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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 |