US2720910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugator roll mounting
Assignee: F X HOOPER Co Inc
•
Filing: 1952-03-08
•
Granted: 1955-10-18
•
Expires: 1972-03-08
Abstract
No abstract record available.
Inventors
- 👤 Rockstrom Leonard
- 👤 William F Ward
- 👤 Jindra Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:35
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2845; B31F1/2863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1642782A
Cited
US1765922A
Cited
US1810930A
Cited
AT115203B
Cited
US1912709A
Cited
US2138397A
Cited
US2545921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |