Patent US2539843A successfully refreshed from Google Patents.
Patent US2133781A successfully refreshed from Google Patents.
US2133781A
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Assignee: United Carr Fastener Corp
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Filing: 1935-12-14
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Granted: 1938-10-18
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Expires: 1955-12-14
Abstract
No abstract record available.
Inventors
- 👤 Johnson Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:57
CPC Classifications
A; A47; A47B; A47B96/00; A47B96/06; A47B96/068; F; F25; F25D; F25D23/00; F25D23/06; F25D23/065; F25D23/067; A47B2220/00; A47B2220/0036; A47B2220/0041
Claims Analysis
Total Claims: 0
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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) | 1941-10-17 | 1942-04-18 | 1942-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-17 | 1946-04-18 | 1946-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-17 | 1950-04-18 | 1950-10-18 | $7700.00 | Window Closed / Lapsed |