US2790400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skylight dome construction
Assignee: SAWCO Inc A CORP
•
Filing: 1952-12-26
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Granted: 1957-04-30
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Expires: 1972-12-26
Abstract
No abstract record available.
Inventors
- 👤 Wasserman Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:39
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/03; E04D3/00; E04D3/36; E04D3/366; E04D13/04; E04D13/0404; E04D13/0445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US228282A
Cited
US380864A
Cited
FR632916A
Cited
AT50728B
Cited
US2258724A
Cited
GB545764A
Cited
US2425060A
Cited
US2610593A
Cited
US2703060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |