US2547167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
All-weather recording board
Assignee: Individual
•
Filing: 1949-07-21
•
Granted: 1951-04-03
•
Expires: 1969-07-21
Abstract
No abstract record available.
Inventors
- 👤 John P Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:45
CPC Classifications
B; B43; B43L; B43L3/00; B43L3/007; Y; Y10; Y10S; Y10S24/00; Y10S24/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US312702A
Cited
US622640A
Cited
US953631A
Cited
US1133979A
Cited
US1400217A
Cited
US1642385A
Cited
GB369760A
Cited
GB382548A
Cited
US1967632A
Cited
GB554421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |