US2967504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sweeping a mine
Assignee: Individual
•
Filing: 1947-04-24
•
Granted: 1961-01-10
•
Expires: 1967-04-24
Abstract
No abstract record available.
Inventors
- 👤 John V Atanasoff
- 👤 Legvold Sam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:23
CPC Classifications
B; B63; B63G; B63G7/00; B63G7/02; B63G7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US637142A
Cited
US717890A
Cited
US1081794A
Cited
US1960846A
Cited
US1849965A
Cited
US2391926A
Cited
US2415824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |