US2812692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of daylighting
Assignee: OI Glass Inc
•
Filing: 1954-11-01
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Granted: 1957-11-12
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Expires: 1974-11-01
Abstract
No abstract record available.
Inventors
- 👤 Robert A Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:25
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/04; G02B5/045; E; E04; E04C; E04C1/00; E04C1/42; E04C2/00; E04C2/54; E04D; E04D13/00; E04D13/03; E04D13/033; E04D3/00; E04D3/02; E04D3/06; F; F21; F21S; F21S11/00
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) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |