US1220109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric display system.
Assignee: HEINY ELECTRIC CO
•
Filing: 1916-09-15
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Granted: 1917-03-20
•
Expires: 1936-09-15
Abstract
No abstract record available.
Inventors
- 👤 Anatole C Heiny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:09
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G06F3/147; G09; G09G; G09G3/00; G09G3/04
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) | 1920-03-19 | 1920-09-18 | 1921-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-03-19 | 1924-09-18 | 1925-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-03-19 | 1928-09-18 | 1929-03-20 | $7700.00 | Window Closed / Lapsed |