US2988786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window construction
Assignee: Individual
•
Filing: 1958-09-15
•
Granted: 1961-06-20
•
Expires: 1978-09-15
Abstract
No abstract record available.
Inventors
- 👤 Charles J Roos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:00
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/02; E06B1/56; E06B1/60; E06B1/6046; E06B3/00; E06B3/04; E06B3/26; E06B3/2605; E06B5/00; E06B5/10; E06B5/12; E06B2003/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US431500A
Cited
US887240A
Cited
US1809117A
Cited
US2291913A
Cited
US2383691A
Cited
US2621397A
Cited
US2705819A
Cited
FR1097798A
Cited
US2880475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |