Patent US3213733A successfully refreshed from Google Patents.
US3213733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three knife book trimmer
Assignee: F T ROSBACK CO
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Filing: 1964-06-29
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Granted: 1965-10-26
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Major D Glendening
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:55
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/06; B26D7/0625; B26D7/0675; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4564; Y10T83/4567; Y10T83/4587; Y10T83/647; Y10T83/6579; Y10T83/727; Y10T83/734; Y10T83/748; Y10T83/7593; Y10T83/7633; Y10T83/7647; Y10T83/7653
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A THREE BLADE BOOK TRIMMER HAVING TWO LONGITUDINAL BLADES AND A TRANSVERSE BLADE AND MEANS FOR ACTUATING SAID BLADES SIMULTANEOUSLY AT TIMED INTERVALS, THE COMBINATION COMPRISING A FRAME, A CONTINUOUSLY OPERATING ENDLESS CONVEYOR TRAVERSING SAID FRAME IN PREDETERMINED RELATION TO SAID BLADES, WORK-ELEVATING MEANS VERTICALLY SHIFTABLE ON SAID FRAME BETWEEN ELEVATED AND RETRACTED POSITIONS, STOP MEANS CARRIED BY SAID ELEVATING MEANS, SAID STOP MEANS BEING INOPERATIVE WHEN SAID ELEVATING MEANS IS IN A RETRACTED POSITION, AND ADJUSTING MEANS FOR SHIFTING SAID WORK-ELEVATING MEANS BETWEEN ELEVATED AND RETRACTED POSITIONS AT TIMED INTERVALS.
Claim 2
Dependent Claim
92 words
IN A THREE BLADE BOOK TRIMMER HAVING TWO LONGITUDINAL BLADES AND A TRANSVERSE BLADE AND MEANS FOR ACTUATING SAID BLADES SIMULTANEOUSLY AT TIMED INTERVALS, THE COMBINATION COMPRISING A FRAME, A CONTINUOUSLY OPERATING ENDLESS CONVEYOR TRAVERSING SAID FRAME IN PREDETERMINED RELATION TO SAID BLADES, WORK-ELEVATING MEANS VERTICALLY SHIFTABLE ON SAID FRAME BETWEEN ELEVATED AND RETRACTED POSITIONS, STOP MEANS CARRIED BY SAID ELEVATING MEANS, SAID STOP MEANS BEING INOPERATIVE WHEN SAID ELEVATING MEANS IS IN A RETRACTED POSITION, AND ADJUSTING MEANS FOR SHIFTING SAID WORK-ELEVATING MEANS BETWEEN ELEVATED AND RETRACTED POSITIONS AT TIMED INTERVALS.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |