US3407537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closure
Assignee: WALL SYSTEMS GROUP Inc A CORP OF DE
•
Filing: 1967-07-21
•
Granted: 1968-10-29
•
Expires: 1987-07-21
Abstract
No abstract record available.
Inventors
- 👤 Burton A Urbanick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:07
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4636; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24198
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US975337A
Cited
US1683793A
Cited
US2121826A
Cited
US2133199A
Cited
US2611937A
Cited
US2915115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |