US2667831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dating machine
Assignee: Bruning Charles Co Inc
•
Filing: 1950-08-30
•
Granted: 1954-02-02
•
Expires: 1970-08-30
Abstract
No abstract record available.
Inventors
- 👤 Sr Paul B Streich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:44
CPC Classifications
B; B41; B41K; B41K3/00; B41K3/02; B41K3/12; B41K3/121; B41K3/122; B41K3/32; B41K3/34
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) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |