US3169241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signalling device
Assignee: Individual
•
Filing: 1961-03-01
•
Granted: 1965-02-09
•
Expires: 1981-03-01
Abstract
No abstract record available.
Inventors
- 👤 Aiken William Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:08
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/3486; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/372; G09G3/04; G09G3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A SIGNALLING DEVICE COMPRISING AN ENCLOSURE HAVING SIDE PORTIONS AND AT LEAST ONE WINDOW, A SHEET OF MAGNETIZABLE MATERIAL, MEANS MOUNTING SAID SHEET FOR MOVEMENT BETWEEN A POSITION WHEREIN IT CONCEALS AN IDENTIFYING MARK FROM A VIEW THROUGH SAID WINDOW AND A POSITION WHEREIN IT DELAYS THE MARK TO VIEW THROUGH SAID WINDOW, A SPIRAL COIL MOUNTED ON THE SURFACE OF A SIDE PORTION OF SAID ENCLOSURE WHICH IS ADJACENT TO SAID WINDOW, THE CONVOLUTIONS OF SAID COIL BEING SUBSTANTIALLY IN A SURFACE PARALLEL WITH THE SIDE PORTION ON WHICH IT IS MOUNTED, AND MEANS OPERABLE TO ENERGIZE SAID SPIRAL COIL TO MOVE SAID SHEET FROM ONE TO THE OTHER POSITION THEREOF.
Claim 2
Dependent Claim
112 words
A SIGNALLING DEVICE COMPRISING AN ENCLOSURE HAVING SIDE PORTIONS AND AT LEAST ONE WINDOW, A SHEET OF MAGNETIZABLE MATERIAL, MEANS MOUNTING SAID SHEET FOR MOVEMENT BETWEEN A POSITION WHEREIN IT CONCEALS AN IDENTIFYING MARK FROM A VIEW THROUGH SAID WINDOW AND A POSITION WHEREIN IT DELAYS THE MARK TO VIEW THROUGH SAID WINDOW, A SPIRAL COIL MOUNTED ON THE SURFACE OF A SIDE PORTION OF SAID ENCLOSURE WHICH IS ADJACENT TO SAID WINDOW, THE CONVOLUTIONS OF SAID COIL BEING SUBSTANTIALLY IN A SURFACE PARALLEL WITH THE SIDE PORTION ON WHICH IT IS MOUNTED, AND MEANS OPERABLE TO ENERGIZE SAID SPIRAL COIL TO MOVE SAID SHEET FROM ONE TO THE OTHER POSITION THEREOF.
References Cited (Backward Citations)
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US2405429A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |