Patent US3278740A successfully refreshed from Google Patents.
US3278740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating apparatus
Assignee: California Plasteck Inc
•
Filing: 1964-03-02
•
Granted: 1966-10-11
•
Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Leslie E Madansky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:27
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A DIAL ILLUMINATING DEVICE, COMPRISING: A FLAT TRANSPARENT MEMBER HAVING A DIAL-SIDE SURFACE AND A SURFACE OPPOSITE THERETO, SAID MEMBER FURTHER HAVING AN OBLIQUE, CONTINUOUS WINDOW WALL DEFINING AN APERTURE, SAID WINDOW WALL HAVING AN EDGE CONTIGUOUS WITH SAID DIAL-SIDE SURFACE AND DEFINING A FIRST CONTOUR LINE FOLLOWING THE CONTOUR OF THE DIAL TO BE ILLUMINATED, THE SURFACE OF SAID MEMBER OPPOSITE TO SAID DIAL-SIDE SURFACE HAVING AN EDGE ALONG THE APERTURE AND DEFINING A SECOND CONTOUR LINE SUBSTANTIALLY CONCENTRICALLY TO SAID FIRST CONTOUR LINE BUT ENCLOSING A SMALLER AREA THAN SAID FIRST CONTOUR LINE; A REFLECTING AND OPAQUE LAYER ON SAID MEMBER COVERING ITS SURFACES EXCEPT SAID WINDOW WALL; MEANS IN SAID MEMBER DEFINING A PLURALITY OF PITS AND BEING ARRANGED AROUND SAID WINDOW WALL; MEANS DEFINING A FIRST AND A SECOND CONTINUOUS CHANNEL IN SAID MEMBER; AND MEANS DEFINING BRANCH CHANNELS INDIVIDUALLY INTER-
Claim 2
Dependent Claim
145 words
A DIAL ILLUMINATING DEVICE, COMPRISING: A FLAT TRANSPARENT MEMBER HAVING A DIAL-SIDE SURFACE AND A SURFACE OPPOSITE THERETO, SAID MEMBER FURTHER HAVING AN OBLIQUE, CONTINUOUS WINDOW WALL DEFINING AN APERTURE, SAID WINDOW WALL HAVING AN EDGE CONTIGUOUS WITH SAID DIAL-SIDE SURFACE AND DEFINING A FIRST CONTOUR LINE FOLLOWING THE CONTOUR OF THE DIAL TO BE ILLUMINATED, THE SURFACE OF SAID MEMBER OPPOSITE TO SAID DIAL-SIDE SURFACE HAVING AN EDGE ALONG THE APERTURE AND DEFINING A SECOND CONTOUR LINE SUBSTANTIALLY CONCENTRICALLY TO SAID FIRST CONTOUR LINE BUT ENCLOSING A SMALLER AREA THAN SAID FIRST CONTOUR LINE; A REFLECTING AND OPAQUE LAYER ON SAID MEMBER COVERING ITS SURFACES EXCEPT SAID WINDOW WALL; MEANS IN SAID MEMBER DEFINING A PLURALITY OF PITS AND BEING ARRANGED AROUND SAID WINDOW WALL; MEANS DEFINING A FIRST AND A SECOND CONTINUOUS CHANNEL IN SAID MEMBER; AND MEANS DEFINING BRANCH CHANNELS INDIVIDUALLY INTER-
References Cited (Backward Citations)
US2172765A
Cited
US2804540A
Cited
US2703547A
Cited
US2891141A
Cited
GB838431A
Cited
GB801526A
Cited
US2839670A
Cited
US3120350A
Cited
US3120349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |