Patent US3089271A successfully refreshed from Google Patents.
US3089271A
Expired / Lapsed
US
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Apparatus for skywriting
Assignee: Individual
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Filing: 1960-12-23
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Granted: 1963-05-14
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Gordon R Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:11
CPC Classifications
G; G09; G09F; G09F21/00; G09F21/06; G09F21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN APPARATUS FOR FORMING SMOKE CONSTITUTED CHARACTERS IN THE AIR INCLUDING, AMONGST OTHERS, LETTERS, NUMERALS, PICTURES OR SYMBOLS OR COMBINATIONS THEREOF, COMPRISING A MANIFOLD CARRIED BY AND EXTENDIBLE FROM A VEHICLE, A PLURALITY OF RELATIVELY LONGITUDINALLY SPACED VALVED DISCHARGE NOZZLES ON AND COMMUNICATING WITH THE MANIFOLD, ELECTRICALLY OPERATED MEANS FOR OPENING AND CLOSING THE NOZZLE VALVES, AND A PLURALITY OF RELATIVELY ADJUSTABLE GUIDE PATTERN SCANNING PHOTOELECTRIC CELLS INDIVIDUALLY CONNECTED TO THE INDIVIDUAL ELECTRICALLY OPERATED MEANS FOR ACTIVATING THE SAME.
Claim 2
Independent Claim
79 words
AN APPARATUS FOR FORMING SMOKE CONSTITUTED CHARACTERS IN THE AIR INCLUDING, AMONGST OTHERS, LETTERS, NUMERALS, PICTURES OR SYMBOLS OR COMBINATIONS THEREOF, COMPRISING A MANIFOLD CARRIED BY AND EXTENDIBLE FROM A VEHICLE, A PLURALITY OF RELATIVELY LONGITUDINALLY SPACED VALVED DISCHARGE NOZZLES ON AND COMMUNICATING WITH THE MANIFOLD, ELECTRICALLY OPERATED MEANS FOR OPENING AND CLOSING THE NOZZLE VALVES, AND A PLURALITY OF RELATIVELY ADJUSTABLE GUIDE PATTERN SCANNING PHOTOELECTRIC CELLS INDIVIDUALLY CONNECTED TO THE INDIVIDUAL ELECTRICALLY OPERATED MEANS FOR ACTIVATING THE SAME.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |