US3457688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspended ceiling
Assignee: Eastern Products Corp
•
Filing: 1965-05-03
•
Granted: 1969-07-29
•
Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Henry Znamirowski
- 👤 David J Roles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:44
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/065; E04B9/067; E04B9/068; E04B9/08; E04B9/10; E04B9/12; E04B9/122; Y; Y10; Y10S; Y10S52/00; Y10S52/05; Y10T; Y10T403/00; Y10T403/44; Y10T403/447; Y10T403/70; Y10T403/7001; Y10T403/7003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |