Patent US3399618A successfully refreshed from Google Patents.
US3399618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Identity card and key-controlled shiftable date printer
Assignee: Demco Library Supplies Inc
•
Filing: 1966-04-22
•
Granted: 1968-09-03
•
Expires: 1986-04-22
Abstract
No abstract record available.
Inventors
- 👤 George L Congdon
- 👤 Donald J Lemens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:56
CPC Classifications
B; B41; B41L; B41L45/00; B41L45/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1608145A
Cited
US2427602A
Cited
US2043600A
Cited
US1919954A
Cited
US2092026A
Cited
US2119539A
Cited
US2620730A
Cited
US2916989A
Cited
US3018725A
Cited
US3152543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |