Patent US2077828A successfully refreshed from Google Patents.
US2077828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ruler
Assignee: WESTCOTT RULE Co Inc
•
Filing: 1935-03-19
•
Granted: 1937-04-20
•
Expires: 1955-03-19
Abstract
No abstract record available.
Inventors
- 👤 Briney S Dombrowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:45
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/002; G01B3/004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-04-19 | 1940-10-19 | 1941-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-19 | 1944-10-19 | 1945-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-19 | 1948-10-19 | 1949-04-20 | $7700.00 | Window Closed / Lapsed |