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US3142920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calendars
Assignee: Individual
•
Filing: 1961-11-01
•
Granted: 1964-08-04
•
Expires: 1981-11-01
Abstract
No abstract record available.
Inventors
- 👤 Jeffery N Nelson
- 👤 Wilbur E Bennington
- 👤 Marshall S Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:26
CPC Classifications
B; B42; B42D; B42D5/00; B42D5/04; B42D5/043
Claims Analysis
Total Claims: 0
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |