US188570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in blue-glass sun-baths
Assignee: —
•
Filing: —
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Granted: 1877-03-20
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Expires: 1894-03-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:08
CPC Classifications
A; A47; A47G; A47G5/00; E; E04; E04B; E04B2/00; E04B2/74; E04B2002/7483
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) | 1880-03-19 | 1880-09-18 | 1881-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1884-03-19 | 1884-09-18 | 1885-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1888-03-19 | 1888-09-18 | 1889-03-20 | $7700.00 | Window Closed / Lapsed |