US3487669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for forming sheet metal joints and seams
Assignee: Individual
•
Filing: 1967-09-20
•
Granted: 1970-01-06
•
Expires: 1987-09-20
Abstract
No abstract record available.
Inventors
- 👤 Joe H Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:50
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/02; B21D39/025; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/53; Y10T29/53709; Y10T29/53787; Y10T29/53791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3195492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |