Patent US3346070A successfully refreshed from Google Patents.
Patent US1706048A successfully refreshed from Google Patents.
Patent US3515038A successfully refreshed from Google Patents.
US3515038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helically ribbed tubing and method and apparatus for making the same
Assignee: Wiremold Co
•
Filing: 1967-08-31
•
Granted: 1970-06-02
•
Expires: 1987-08-31
Abstract
No abstract record available.
Inventors
- 👤 Norman J Perusse
- 👤 Wilbur D Cheever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:54
CPC Classifications
B; B31; B31C; B31C3/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |