US3391556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination lock
Assignee: GEORGE R SCHULL
•
Filing: 1967-04-28
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Granted: 1968-07-09
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Expires: 1987-04-28
Abstract
No abstract record available.
Inventors
- 👤 George R Schull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/08; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/417; Y10T70/422; Y10T70/424; Y10T70/70; Y10T70/7006; Y10T70/7011; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/7243; Y10T70/7249; Y10T70/7424
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US835437A
Cited
US2162442A
Cited
US2079703A
Cited
US2318908A
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US2852928A
Cited
DE1130321B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |