US1223752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reflecting light-rays.
Assignee: AT&T Inc
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Filing: 1915-01-14
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Granted: 1917-04-24
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Expires: 1935-01-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:21
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/28; H01K1/30; G; G03; G03B; G03B21/00; G03B21/14; G03B21/20; G03B27/00; G03B27/32; G03B27/52; G03B27/54; H01K1/32; H01K1/325
Claims Analysis
Total Claims: 0
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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) | 1920-04-23 | 1920-10-23 | 1921-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-04-23 | 1924-10-23 | 1925-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-04-23 | 1928-10-23 | 1929-04-24 | $7700.00 | Window Closed / Lapsed |