Patent US2826235A successfully refreshed from Google Patents.
US2826235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal gutter making machine
Assignee: Artos Engineering Co
•
Filing: 1953-01-30
•
Granted: 1958-03-11
•
Expires: 1973-01-30
Abstract
No abstract record available.
Inventors
- 👤 Gudmestad Ragnar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:03
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/06; B21D5/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US759480A
Cited
US819143A
Cited
US803859A
Cited
US935906A
Cited
US1117177A
Cited
US1155522A
Cited
US1730361A
Cited
US2493415A
Cited
CH280248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |