US1543424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-source covering
Assignee: GROUNDULET Co
•
Filing: 1924-01-09
•
Granted: 1925-06-23
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Expires: 1944-01-09
Abstract
No abstract record available.
Inventors
- 👤 Clifford W Cowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:14
CPC Classifications
A; A47; A47G; A47G33/00; A47G33/04; A47G33/08; A47G33/0836; A47G2033/0827; A47G2033/089; F; F21; F21W; F21W2121/00; F21W2121/04; Y; Y10; Y10S; Y10S362/00; Y10S362/806; Y10S362/807
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) | 1928-06-22 | 1928-12-22 | 1929-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-06-22 | 1932-12-22 | 1933-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-06-22 | 1936-12-22 | 1937-06-23 | $7700.00 | Window Closed / Lapsed |