US3469592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid signal summing modulator and amplifier
Assignee: Johnson Controls International Inc
•
Filing: 1965-12-27
•
Granted: 1969-09-30
•
Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Frank A Kuczkowski
- 👤 Richard N Laakaniemi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:03
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/20; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/212; Y10T137/2125; Y10T137/2131; Y10T137/2164; Y10T137/2169; Y10T137/2174
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2919712A
Cited
US3024805A
Cited
US3174497A
Cited
US3207168A
Cited
US3272215A
Cited
US3285263A
Cited
US3323532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |