Patent US2376020A successfully refreshed from Google Patents.
Patent US3115618A successfully refreshed from Google Patents.
Patent US2802416A successfully refreshed from Google Patents.
US2802416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check endorsing apparatus
Assignee: Bell and Howell Co
•
Filing: 1955-10-12
•
Granted: 1957-08-13
•
Expires: 1975-10-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Waldemar B Karkow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:39
CPC Classifications
B; B41; B41K; B41K3/00; B41K3/02; B41K3/04; B41K3/06; B41K3/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1702763A
Cited
US1987816A
Cited
US2173454A
Cited
US2237269A
Cited
US2406040A
Cited
US2743671A
Cited
US2683413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |