US3389854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Letterbox plate
Assignee: H B IVES CO
•
Filing: 1966-12-22
•
Granted: 1968-06-25
•
Expires: 1986-12-22
Abstract
No abstract record available.
Inventors
- 👤 Coopersmith Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:32
CPC Classifications
A; A47; A47G; A47G29/00; A47G29/12; A47G29/122; A47G29/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US731138A
Cited
US2852802A
Cited
US3007100A
Cited
GB875795A
Cited
GB880842A
Cited
GB869736A
Cited
CH404451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |