Patent US3434689A successfully refreshed from Google Patents.
US3434689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel-type form system with gasket strips
Assignee: DS Brown Co
•
Filing: 1968-03-13
•
Granted: 1969-03-25
•
Expires: 1988-03-13
Abstract
No abstract record available.
Inventors
- 👤 Owren J Aftreth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:18
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US894549A
Cited
US1945124A
Cited
US2213159A
Cited
US2236616A
Cited
US2170637A
Cited
US2229317A
Cited
US2447670A
Cited
US2602210A
Cited
US2898659A
Cited
US2953835A
Cited
US2991532A
Cited
US3047931A
Cited
US3288427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |