US2668509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glazed and like roof structure of the lantern light or deck light type
Assignee: Williams & Williams Ltd
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Filing: 1952-01-21
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Granted: 1954-02-09
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Expires: 1972-01-21
Abstract
No abstract record available.
Inventors
- 👤 Fox-Williams Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:00
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/02; E04D3/06; E04D3/08; E04B; E04B7/00; E04B7/02; E04B7/06; E04B7/063; E04B2007/066; E04D2003/0806; E04D2003/0818; E04D2003/0825; E04D2003/0868; E04D2003/0875
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) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |