US2600533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memorandum pad unit
Assignee: SLENCIL CO
•
Filing: 1950-07-26
•
Granted: 1952-06-17
•
Expires: 1970-07-26
Abstract
No abstract record available.
Inventors
- 👤 Carl C Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:09
CPC Classifications
B; B42; B42D; B42D5/00; B42D5/003; B42D5/008; B42D5/005; B42D5/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR959182A
Cited
US676552A
Cited
US1482659A
Cited
US1506147A
Cited
US1648545A
Cited
CH157048A
Cited
US2079257A
Cited
US2185151A
Cited
US2333858A
Cited
US2414810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |