US3524259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spirit level
Assignee: Individual
•
Filing: 1968-10-10
•
Granted: 1970-08-18
•
Expires: 1988-10-10
Abstract
No abstract record available.
Inventors
- 👤 Frederick Offutt Handley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:11
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2454133A
Cited
US1022396A
Cited
US1225132A
Cited
US1241341A
Cited
US1264146A
Cited
US2789363A
Cited
US2790069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |