US3655860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for constructing handle of thermoplastic material
Assignee: International Paper Co
•
Filing: 1969-06-23
•
Granted: 1972-04-11
•
Expires: 1989-06-23
Abstract
Abstract A method for constructing a handle of thermoplastic material by forming the material at an elevated temperature into an open loop having a plurality of co-planar sides and a cross-section in the shape of an inverted "T," and by cooling the loop essentially free of restraint on the movement of the sides of the loop so that as the loop cools the sides of the loop will tend to bow concavely relative to the interior of the loop, and the corner angles between contiguous sides of the loop will tend to become more acute, thereby bringing closer together the ends of the loop.
Inventors
- 👤 Leigh D Leiter
- 👤 Frank R Linda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:42
CPC Classifications
A; A47; A47G; A47G23/00; A47G23/02; A47G23/0258
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |