Patent US2904032A successfully refreshed from Google Patents.
US2904032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weed burner
Assignee: Research Corp
•
Filing: 1955-01-31
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Granted: 1959-09-15
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Expires: 1975-01-31
Abstract
No abstract record available.
Inventors
- 👤 Harold S Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:15
CPC Classifications
A; A01; A01M; A01M15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US13957A
Cited
US228131A
Cited
GB190612277A
Cited
GB191201704A
Cited
US1074755A
Cited
US2153900A
Cited
US2569194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |