US2902953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subsoil injector
Assignee: Individual
•
Filing: 1956-03-20
•
Granted: 1959-09-08
•
Expires: 1976-03-20
Abstract
No abstract record available.
Inventors
- 👤 William M Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:19
CPC Classifications
A; A01; A01G; A01G29/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1449606A
Cited
US1769266A
Cited
US1755445A
Cited
US1748488A
Cited
US2302799A
Cited
US2323773A
Cited
US2766975A
Cited
US2800313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |