US3401809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book handling apparatus
Assignee: CHICAGO MACHINERY LAB Inc
•
Filing: 1965-10-20
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Granted: 1968-09-17
•
Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 William B Mccain
- 👤 James F Cosgrove
- 👤 Ronald W Weller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:49
CPC Classifications
B; B65; B65H; B65H31/00; B65H31/32; B65H31/26; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/102; Y10S414/103; Y10S414/113; Y10S414/114; Y10S414/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1569033A
Cited
US2167045A
Cited
US2205767A
Cited
US2858948A
Cited
US2917991A
Cited
US3059789A
Cited
US3150578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |