US3545091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal spirit level
Assignee: Individual
•
Filing: 1968-05-29
•
Granted: 1970-12-08
•
Expires: 1988-05-29
Abstract
No abstract record available.
Inventors
- 👤 Martin Sebastiani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:48
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)
US1545932A
Cited
US1640020A
Cited
US2624118A
Cited
US2624953A
Cited
FR1262758A
Cited
CH417982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |