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US2887930A
Expired / Lapsed
US
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Emergency warning signal marker
Assignee: Individual
•
Filing: 1956-07-06
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Granted: 1959-05-26
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Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 Zoffmann Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:49
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/654; E01F9/688
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1835218A
Cited
US2107994A
Cited
US2070472A
Cited
US2108370A
Cited
US2117206A
Cited
US2489499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |