US2991698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety marker
Assignee: Individual
•
Filing: 1957-12-13
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Granted: 1961-07-11
•
Expires: 1977-12-13
Abstract
No abstract record available.
Inventors
- 👤 Leubaz Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:55
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; E; E01; E01F; E01F9/00; E01F9/50; E01F9/553
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US355810A
Cited
US1895173A
Cited
GB360761A
Cited
US1956252A
Cited
GB438328A
Cited
US2229179A
Cited
US2328407A
Cited
US2310817A
Cited
DE873224C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |