US2473682A
Expired / Lapsed
US
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Angle measuring mechanism
Assignee: AT&T Inc
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Filing: 1946-04-26
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Granted: 1949-06-21
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Expires: 1966-04-26
Abstract
No abstract record available.
Inventors
- 👤 Fred E Harris
- 👤 Jr Andrew S Hegeman
- 👤 Donald H Mitchell
- 👤 Harry N Snook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:41
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/121; G05D3/122
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) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |