US3500173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined photo-sensitive attenuator and clipper
Assignee: Individual
•
Filing: 1967-03-14
•
Granted: 1970-03-10
•
Expires: 1987-03-14
Abstract
No abstract record available.
Inventors
- 👤 William Ross Aiken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/02; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/625; G05F1/652; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0047; H03G3/00; H03G3/20; H03G3/30; H03G3/3005; H03G3/301; H03G7/00; H03G7/06
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) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |