US1492732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gopher killer
Assignee: Individual
•
Filing: 1923-07-18
•
Granted: 1924-05-06
•
Expires: 1943-07-18
Abstract
No abstract record available.
Inventors
- 👤 Louis A Knopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:42
CPC Classifications
A; A01; A01M; A01M13/00; A01M13/006; A01M17/00; A01M17/002; A01M17/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-05-06 | 1927-11-05 | 1928-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-05-06 | 1931-11-05 | 1932-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-05-06 | 1935-11-05 | 1936-05-06 | $7700.00 | Window Closed / Lapsed |