Patent US2712340A successfully refreshed from Google Patents.
US2712340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for grooving sheet metal
Assignee: Houdaille Hershey Corp
•
Filing: 1950-02-08
•
Granted: 1955-07-05
•
Expires: 1970-02-08
Abstract
No abstract record available.
Inventors
- 👤 Ray A Sandberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:44
CPC Classifications
B; B21; B21D; B21D13/00; B21D13/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE601234C
Cited
US1482432A
Cited
GB333340A
Cited
US1825067A
Cited
US1856151A
Cited
DE577136C
Cited
US2079553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-04 | 1959-01-03 | 1959-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-04 | 1963-01-03 | 1963-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-04 | 1967-01-03 | 1967-07-05 | $7700.00 | Window Closed / Lapsed |