US2636541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine and method for forming collapsible tubing
Assignee: Wiremold Co
•
Filing: 1949-04-11
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Granted: 1953-04-28
•
Expires: 1969-04-11
Abstract
No abstract record available.
Inventors
- 👤 Charles E Rutherford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:17
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/12; B21C37/124; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/51; Y10T29/5122; Y10T29/53; Y10T29/53526; Y10T29/53709; Y10T29/53787; Y10T29/53791
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |