US3156169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finsterwalder
Assignee: —
•
Filing: —
•
Granted: 1964-11-10
•
Expires: 1981-11-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:38
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2134941A
Cited
FR871681A
Cited
US2590685A
Cited
US2660049A
Cited
US2611262A
Cited
US2737802A
Cited
US2702424A
Cited
GB711449A
Cited
FR1167385A
Cited
US2950576A
Cited
US2961803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |