US2219450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strip shingle
Assignee: New Haven Copper Co
•
Filing: 1938-06-17
•
Granted: 1940-10-29
•
Expires: 1958-06-17
Abstract
No abstract record available.
Inventors
- 👤 Edward H Koenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/26; E04D1/265; E04D1/29; E04D1/2907; E04D1/2914; E04D1/2918
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-10-29 | 1944-04-29 | 1944-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-29 | 1948-04-29 | 1948-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-29 | 1952-04-29 | 1952-10-29 | $7700.00 | Window Closed / Lapsed |