US2455353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copy and practice book
Assignee: Individual
•
Filing: 1944-05-08
•
Granted: 1948-12-07
•
Expires: 1964-05-08
Abstract
No abstract record available.
Inventors
- 👤 Stanley T Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:21
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/06; G09B19/08; B; B42; B42D; B42D1/00; B42D1/001; B42D1/003; B42D1/006; B42D1/008; B42D5/00; B42D5/003; G09B11/00; G09B11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US171268A
Cited
US399060A
Cited
US544714A
Cited
GB189905448A
Cited
US791706A
Cited
US1039166A
Cited
US1450261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |