US2611971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dividing protractor
Assignee: Individual
•
Filing: 1948-07-23
•
Granted: 1952-09-30
•
Expires: 1968-07-23
Abstract
No abstract record available.
Inventors
- 👤 Rabatine Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:28
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26; G01C9/28; B; B43; B43L; B43L9/00; G01B; G01B3/00; G01B3/56; G01B3/563
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US359580A
Cited
US610952A
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US645058A
Cited
US742077A
Cited
GB190720928A
Cited
US1063342A
Cited
US1284879A
Cited
US1506556A
Cited
US2129695A
Cited
US2541641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |