US2443170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced sheet metal
Assignee: Reconstruction Finance Corp
•
Filing: 1942-08-29
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Granted: 1948-06-08
•
Expires: 1962-08-29
Abstract
No abstract record available.
Inventors
- 👤 Richard S Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:21
CPC Classifications
B; B21; B21H; B21H8/00; B21H8/005; E; E04; E04C; E04C2/00; E04C2/30; E04C2/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49632; Y10T428/00; Y10T428/12; Y10T428/1241; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US662567A
Cited
US1450357A
Cited
US1766857A
Cited
US1944990A
Cited
US1996004A
Cited
US2154597A
Cited
US2233592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |