Patent US2723740A successfully refreshed from Google Patents.
US2723740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Type bar action
Assignee: International Business Machines Corp
•
Filing: 1952-12-26
•
Granted: 1955-11-15
•
Expires: 1972-12-26
Abstract
No abstract record available.
Inventors
- 👤 Thurston H Toeppen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:36
CPC Classifications
B; B41; B41J; B41J23/00; B41J23/02; B41J23/12; B41J5/00; B41J5/08; B41J5/28
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) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |