US2670537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lawn sprinkler head cleaner
Assignee: Individual
•
Filing: 1950-01-23
•
Granted: 1954-03-02
•
Expires: 1970-01-23
Abstract
No abstract record available.
Inventors
- 👤 George E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:14
CPC Classifications
A; A01; A01G; A01G25/00; Y; Y10; Y10S; Y10S30/00; Y10S30/07; Y10T; Y10T408/00; Y10T408/89; Y10T408/895; Y10T408/8953
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |