US3402890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequencing sprinkler
Assignee: R&H Molding Inc
•
Filing: 1966-05-25
•
Granted: 1968-09-24
•
Expires: 1986-05-25
Abstract
No abstract record available.
Inventors
- 👤 Charles J Heitzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:14
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/16; A01G25/162; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1979477A
Cited
US2256737A
Cited
US2720420A
Cited
US2793908A
Cited
US2921629A
Cited
US3147770A
Cited
US3145736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |