Patent US3104849A successfully refreshed from Google Patents.
US3104849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible mandrel
Assignee: —
•
Filing: 1961-01-19
•
Granted: 1963-09-24
•
Expires: 1981-01-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:13
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/28; B21C47/30; Y; Y10; Y10S; Y10S242/00; Y10S242/909
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
AN EXPANSIBLE MANDREL FOR COILING HOT STRIP COMPRISING A CENTRAL CORE HAVING A LIQUID CONVEYING DUCT THEREIN, A PLURALITY OF SEGMENTAL ELEMENTS AROUND SAID CORE, EACH HAVING AT LEAST ONE LENGTHWISE PASSAGEWAY THEREIN, MEANS CONNECTED BETWEEN SAID CORE AND SAID SEGMENTAL ELEMENTS FOR EXPANDING SAID SEGMENTAL ELEMENTS RELATIVE TO SAID
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |