US2582491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for straightening round rods or tubes of plastic material
Assignee: AT&T Inc
•
Filing: 1948-04-21
•
Granted: 1952-01-15
•
Expires: 1968-04-21
Abstract
No abstract record available.
Inventors
- 👤 Einer W Larsen
- 👤 John G Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:39
CPC Classifications
B; B29; B29C; B29C31/00; B29C31/002; B29C35/00; B29C35/02; B29C35/04; B29C53/00; B29C53/16; B29C53/20; B29L; B29L2023/00; B29L2023/22; B29L2031/00; B29L2031/06; Y; Y10; Y10S; Y10S264/00; Y10S264/66
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US601062A
Cited
US2011576A
Cited
US2069589A
Cited
US2039271A
Cited
US2168509A
Cited
US2351861A
Cited
US2442443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |