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Patent US2784692A successfully refreshed from Google Patents.
US2784692A
Expired / Lapsed
US
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Automatic signal for parking lots
Assignee: Individual
•
Filing: 1955-02-24
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Granted: 1957-03-12
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Expires: 1975-02-24
Abstract
No abstract record available.
Inventors
- 👤 Ballesteros Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:05
CPC Classifications
E; E04; E04H; E04H6/00; E04H6/42; E04H6/426; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/65
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |