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US3373749A
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US
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Assignee: Esselte Pendaflex Corp
•
Filing: 1966-09-13
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Granted: 1968-03-19
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Expires: 1986-09-13
Abstract
No abstract record available.
Inventors
- 👤 Frank Wance
- 👤 Rudolph A Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:34
CPC Classifications
B; B42; B42F; B42F11/00; B42F11/02; B42D; B42D17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US538621A
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US2841152A
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US1360264A
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US1877831A
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US2016588A
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US2413157A
Cited
US2552704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |