US3421745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-correcting dispensing mixer
Assignee: ROBERT I PRUPIS
•
Filing: 1966-06-24
•
Granted: 1969-01-14
•
Expires: 1986-06-24
Abstract
No abstract record available.
Inventors
- 👤 Robert I Prupis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:36
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/06; Y; Y10; Y10S; Y10S261/00; Y10S261/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1150115A
Cited
US1622482A
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US2105773A
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US1915938A
Cited
US2053647A
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US2035628A
Cited
US2766027A
Cited
US3151188A
Cited
US3287002A
Cited
US3348821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |