US3443601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal joint
Assignee: Individual
•
Filing: 1967-06-07
•
Granted: 1969-05-13
•
Expires: 1987-06-07
Abstract
No abstract record available.
Inventors
- 👤 Emil Siegwart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:58
CPC Classifications
F; F16; F16B; F16B5/00; B; B21; B21C; B21C37/00; B21C37/06; B21C37/10; B21C37/104; F24; F24F; F24F13/00; F24F13/02; F24F13/0209; F24F13/0272
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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |