US3056236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable sand blast apparatus
Assignee: Individual
•
Filing: 1961-10-12
•
Granted: 1962-10-02
•
Expires: 1981-10-12
Abstract
No abstract record available.
Inventors
- 👤 Roy A Mcmillin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:48
CPC Classifications
B; B24; B24C; B24C7/00; B24C7/0046; B24C7/0053; B24C3/00; B24C3/02; B24C3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1443762A
Cited
US1535939A
Cited
US1858475A
Cited
US1585549A
Cited
US2371434A
Cited
US2521931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |