US2983001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window structure
Assignee: Individual
•
Filing: 1958-09-23
•
Granted: 1961-05-09
•
Expires: 1978-09-23
Abstract
No abstract record available.
Inventors
- 👤 Clinton H Guldager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:25
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1343416A
Cited
US2316442A
Cited
US2570336A
Cited
US2654451A
Cited
DE853062C
Cited
FR1079458A
Cited
US2769657A
Cited
US2770334A
Cited
US2816632A
Cited
US2768716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |