US3404840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pop-up head for sprinkler system
Assignee: Mahogany Corp
•
Filing: 1965-10-22
•
Granted: 1968-10-08
•
Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 William J Trickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:09
CPC Classifications
B; B05; B05B; B05B15/00; B05B15/70; B05B15/72; B05B15/74
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1892959A
Cited
US2031754A
Cited
US2506032A
Cited
US2812977A
Cited
US2879946A
Cited
US2981481A
Cited
US2989246A
Cited
US2990120A
Cited
US3034728A
Cited
US3084869A
Cited
US3268173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |