US3501797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tacky mat with improved sheet separating means
Assignee: Individual
•
Filing: 1968-09-09
•
Granted: 1970-03-24
•
Expires: 1988-09-09
Abstract
No abstract record available.
Inventors
- 👤 John J Nappi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:33
CPC Classifications
B; B32; B32B; B32B27/00; A; A47; A47L; A47L23/00; A47L23/22; A47L23/26; A47L23/266; Y; Y10; Y10S; Y10S206/00; Y10S206/82; Y10T; Y10T428/00; Y10T428/14; Y10T428/1476; Y10T428/24; Y10T428/2419; Y10T428/24264
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1769719A
Cited
US2214763A
Cited
US3138466A
Cited
US3083393A
Cited
US3247956A
Cited
US3400421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |