US3552037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-programmed planetariums
Assignee: Planetariums Unlimited Inc
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Filing: 1966-05-19
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Granted: 1971-01-05
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Expires: 1986-05-19
Abstract
Abstract A PRE-PROGRAMMED PLANETARIUM CONTROLLED BY A SYNCHRONIZED TIMING TRACK ON A TAPE RECORDER. PLANETARIUM LECTURES FOR THE PLANETARIUM AND TIME SIGNALS SYNCHRONIZED WITH THE LECTURES ARE RECORDED ON MAGNETIC TAPE. THE SIGNALS ACTUATE A STEPPING SWITCH AND PRODUCE SEQUENTIAL ENERGIZATION OF VARIOUS FUNCTIONS OF THE PLANETARIUM. A PLURALITY OF INDIVIDUAL START POINTERS ARE FIXEDLY MOUNTED TO THE STAR PROJECTOR OF THE PLANETARUM. EACH HAS AN INDIVIDUALLY ADJUSTABLE MEANS FOR FOCUSING A TARGET IMAGE AT OR NEAR A STAR TO BE LOCATED. THE STAR POINTERS ARE CONNECTED TO A STEPPING SWITCH WHICH IS ACTUATED AT PRESELECTED INTERVALS BY TIME SIGNALS FROM THE TAPE RECORDER.
Inventors
- 👤 Philip Stern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:56
CPC Classifications
G; G09; G09B; G09B27/00; G09B27/02; Y; Y10; Y10S; Y10S40/00; Y10S40/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |