US3543545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination lock
Assignee: Presto Lock Co Inc
•
Filing: 1969-02-17
•
Granted: 1970-12-01
•
Expires: 1989-02-17
Abstract
No abstract record available.
Inventors
- 👤 Boleslaw L Budzyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:15
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/02; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5009; Y10T70/5031; Y10T70/5058; Y10T70/5066; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5301; Y10T70/5305; Y10T70/70; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/726; Y10T70/7305; Y10T70/7322; Y10T70/7328; Y10T70/7333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US57249A
Cited
US3439515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |