US3499585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the discharge of liquid from a reservoir
Assignee: Individual
•
Filing: 1968-01-22
•
Granted: 1970-03-10
•
Expires: 1988-01-22
Abstract
No abstract record available.
Inventors
- 👤 Albert H Halff
- 👤 Allen F Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:11
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/02; E03D1/06; E03D1/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/2802
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) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |