Patent US2561473A successfully refreshed from Google Patents.
US2561473A
Expired / Lapsed
US
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Sheet metal nut
Assignee: MARGARET JANITELLI
•
Filing: 1946-08-16
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Granted: 1951-07-24
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Expires: 1966-08-16
Abstract
No abstract record available.
Inventors
- 👤 Hugh T Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/02; Y; Y10; Y10S; Y10S411/00; Y10S411/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US427714A
Cited
USRE22544E
Cited
US1920792A
Cited
US2266049A
Cited
US2369595A
Cited
US2401672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |