US2809469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for introducing a predetermined amount of poisonous material beneath the surface of the soil
Assignee: Pest Control Ltd
•
Filing: 1953-06-09
•
Granted: 1957-10-15
•
Expires: 1973-06-09
Abstract
No abstract record available.
Inventors
- 👤 Hartley Giibert Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:13
CPC Classifications
A; A01; A01M; A01M17/00; A01M17/002; A01N; A01N25/00; A01N25/26; A01N25/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US667467A
Cited
US968013A
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US1280580A
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DE388566C
Cited
US2502966A
Cited
GB679631A
Cited
BE500118A
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GB688766A
Cited
BE511385A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |