US2916181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal joint and box and method of making same
Assignee: Federal Pacific Electric Co
•
Filing: 1954-10-06
•
Granted: 1959-12-08
•
Expires: 1974-10-06
Abstract
No abstract record available.
Inventors
- 👤 Pfister William
- 👤 Alexander R Norden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:50
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/52; B65; B65D; B65D7/00; B65D7/12; B65D7/34; F; F16; F16B; F16B17/00; F16B17/008; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US6647A
Cited
US454636A
Cited
US518767A
Cited
US597056A
Cited
FR338139A
Cited
US1557066A
Cited
US2426670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |