Patent US3487547A successfully refreshed from Google Patents.
US3487547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-calibrating multilaterative plate comparator
Assignee: BROWN ASSOCIATES Inc D
•
Filing: 1968-04-10
•
Granted: 1970-01-06
•
Expires: 1988-04-10
Abstract
No abstract record available.
Inventors
- 👤 Duane C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:15
CPC Classifications
G; G01; G01C; G01C11/00; G01C11/04; G06; G06G; G06G1/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |