Patent US3232685A successfully refreshed from Google Patents.
US3232685A
Expired / Lapsed
US
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Pilot's knee board
Assignee: WILSTEIN
•
Filing: 1962-06-29
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Granted: 1966-02-01
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Leonard L Wilstein
- 👤 Wallner Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:01
CPC Classifications
B; B43; B43L; B43L3/00; B43L3/001; B42; B42D; B42D5/00; B42D5/003; B42D5/005; B42D5/006; B43K; B43K23/00; B43K23/001; B43L3/005; B43L3/008; B64; B64D; B64D43/00; B64D45/00; B64D2045/0075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A NAVIGATION PLOTTING BOARD ADAPTED FOR USE BY PILOTS COMPRISING A FRAME PROVIDING A FLAT WORKING SURFACE, A DRAWER PROVIDED WITHIN SAID FRAME AND MEANS WHEREBY THE DRAWER MAY BE PULLED OUT FROM EITHER SIDE OF THE FRAME, ILLUMINATING MEANS COMPRISING A BULB PROVIDED AS A PART OF SAID FRAME, MEANS COMPRISING A HOLDER FOR SAID BULB AND MEANS WHEREBY SAID HOLDER AND BUBL ARE RETRACTABLE INTO THE FRAME AND EXTENDIBLE THEREFROM, MEANS FOR CAUSING THE BULB TO BE LIGHTED UPON BEING EXTENDED, SAID ILLUMINATING MEANS BEING PROVIDED IN AN UPPER CORNER OF SAID FRAME, SAID FRAME HAVING INCLUDED THEREWITH A SOURCE OF VOLTAGE FOR SAID ILLUMINATING MEANS, AND A MEMBER HAVING THE SAID FRAME PIVOTALLY ATTACHED THERETO WHEREBY THE FRAME MAY BE ROTATED ABOUT THE PIVOT AND FLEXIBLE MEANS WHEREBY THE SAID MEMBER MAY BE SECURED TO A PILOT''S LEG.
Claim 2
Dependent Claim
141 words
A NAVIGATION PLOTTING BOARD ADAPTED FOR USE BY PILOTS COMPRISING A FRAME PROVIDING A FLAT WORKING SURFACE, A DRAWER PROVIDED WITHIN SAID FRAME AND MEANS WHEREBY THE DRAWER MAY BE PULLED OUT FROM EITHER SIDE OF THE FRAME, ILLUMINATING MEANS COMPRISING A BULB PROVIDED AS A PART OF SAID FRAME, MEANS COMPRISING A HOLDER FOR SAID BULB AND MEANS WHEREBY SAID HOLDER AND BUBL ARE RETRACTABLE INTO THE FRAME AND EXTENDIBLE THEREFROM, MEANS FOR CAUSING THE BULB TO BE LIGHTED UPON BEING EXTENDED, SAID ILLUMINATING MEANS BEING PROVIDED IN AN UPPER CORNER OF SAID FRAME, SAID FRAME HAVING INCLUDED THEREWITH A SOURCE OF VOLTAGE FOR SAID ILLUMINATING MEANS, AND A MEMBER HAVING THE SAID FRAME PIVOTALLY ATTACHED THERETO WHEREBY THE FRAME MAY BE ROTATED ABOUT THE PIVOT AND FLEXIBLE MEANS WHEREBY THE SAID MEMBER MAY BE SECURED TO A PILOT''S LEG.
References Cited (Backward Citations)
US622640A
Cited
US814313A
Cited
US1145848A
Cited
US1930478A
Cited
US1979773A
Cited
US2258542A
Cited
US2284501A
Cited
US2417879A
Cited
US2430862A
Cited
US2480800A
Cited
US2500838A
Cited
US2565784A
Cited
CH308241A
Cited
US2716046A
Cited
US2701173A
Cited
US2707780A
Cited
US2803919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |