US3390388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intrusion detector
Assignee: Arrowhead Enterprises Inc
•
Filing: 1965-03-24
•
Granted: 1968-06-25
•
Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 Jr William G Kahl
- 👤 Jr John Gally
- 👤 Peter F Cavanaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:33
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/18; G08B13/181; G08B13/183; G08B13/184
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A TRANSMITTER FOR AN INFRARED PHOTOELECTRIC DETECTION SYSTEM WHICH COMPRISES: AN ENCLOSURE INCLUDING A BOTTOM WALL DEFINING AN AIR INLET THEREIN, A BACK WALL DEFINING AN AIR OUTLET IN THE UPPER PORTION THEREOF, AND A FRONT WALL DEFINING A RADIATION WINDOW THERETHROUGH; A FOCUSING MIRROR POSITIONED WITH ITS CONVEX SURFACE ADJACENT SAID BACK WALL IN LIGHT BLOCKING RELATIONSHIP TO SAID AIR OUTLET; INFRARED RADIATION GENERATING MEANS POSI-
Claim 2
Dependent Claim
67 words
A TRANSMITTER FOR AN INFRARED PHOTOELECTRIC DETECTION SYSTEM WHICH COMPRISES: AN ENCLOSURE INCLUDING A BOTTOM WALL DEFINING AN AIR INLET THEREIN, A BACK WALL DEFINING AN AIR OUTLET IN THE UPPER PORTION THEREOF, AND A FRONT WALL DEFINING A RADIATION WINDOW THERETHROUGH; A FOCUSING MIRROR POSITIONED WITH ITS CONVEX SURFACE ADJACENT SAID BACK WALL IN LIGHT BLOCKING RELATIONSHIP TO SAID AIR OUTLET; INFRARED RADIATION GENERATING MEANS POSI-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |