US2871719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-pull control
Assignee: ARENS CONTROLS Inc
•
Filing: 1954-07-06
•
Granted: 1959-02-03
•
Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Philip O Hooker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
G; G05; G05G; G05G5/00; G05G5/12; G05G5/20; G05G5/24; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20468; Y10T74/20576; Y10T74/20636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US388074A
Cited
GB189116A
Cited
US1575826A
Cited
US1619117A
Cited
US1761943A
Cited
FR755054A
Cited
US2640242A
Cited
US2592361A
Cited
US2638015A
Cited
FR1037920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |