US2677413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal chair
Assignee: Individual
•
Filing: 1951-01-26
•
Granted: 1954-05-04
•
Expires: 1971-01-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul Pernecky
- 👤 Charles R Grantham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:24
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/04; Y; Y10; Y10S; Y10S297/00; Y10S297/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |