Patent US2852061A successfully refreshed from Google Patents.
US2852061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Return flange forming machine
Assignee: Individual
•
Filing: 1956-01-03
•
Granted: 1958-09-16
•
Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Howard D Kesler
- 👤 Vernon I Bormann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:30
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1448567A
Cited
US926093A
Cited
US1234384A
Cited
US2178926A
Cited
US2233937A
Cited
US2414178A
Cited
DE804926C
Cited
US2633891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |