US3420148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holding device
Assignee: MARION E HUTCHISON
•
Filing: 1965-03-12
•
Granted: 1969-01-07
•
Expires: 1985-03-12
Abstract
No abstract record available.
Inventors
- 👤 Richard E Doerfer
- 👤 Marion E Hutchison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:11
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/08; B23Q2703/00; B23Q2703/02; B23Q2703/04; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1274; Y10T279/1283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2430100A
Cited
US2851994A
Cited
US2948540A
Cited
US2851831A
Cited
US3025071A
Cited
US3186308A
Cited
US3076662A
Cited
US3174745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |