Patent US4725333A successfully refreshed from Google Patents.
US3224166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cover opener for abutted cases
Assignee: NIGRELLI Corp A CORP OF WIS
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Filing: 1962-10-11
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Granted: 1965-12-21
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Expires: 1982-10-11
Abstract
No abstract record available.
Inventors
- 👤 Robert R Johns
- 👤 Wendell E Standley
- 👤 Richard B Wittmann
- 👤 John E Karlovitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:45
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/38; B65B43/39
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
IN A COVER FLAP OPENER DESIGNED TO OPEN SIDE-HINGED COVER FLAPS OPENING CASES, THE COMBINATION OF CONVEYING MEANS ALONG WHICH A CASE IS ADVANCED WITH ITS COVER HINGE LINE EXTENDING IN THE DIRECTION OF TRAVEL, MEANS FOR RAISING A HINGED COVER FLAP ON A CASE UPWARDLY THROUGH A SMALL ANGLE, A PLOW MEANS LOCATED IN SPACED RELATION TO THE CONVEYING MEANS DOWNSTREAM FROM THE COVER RAISING MEANS, SAID PLOW MEANS BEING DISPOSED IN OPERATIVE RELATION TO THE RAISED COVER FLAP TO SWING THE FLAP TO FULLY OPEN POSITION WHEN THE CASE ADVANCES PAST SUCH
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |