US2730852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making and separating envelopes and other containers
Assignee: Individual
•
Filing: 1952-06-26
•
Granted: 1956-01-17
•
Expires: 1972-06-26
Abstract
No abstract record available.
Inventors
- 👤 Peter H Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:55
CPC Classifications
B; B31; B31B; B31B50/00; B31B70/00; B31B70/14; B31B70/20; B31B50/14; B31B50/20; B31B50/22; B31B50/25; B31B50/254; Y; Y10; Y10S; Y10S83/00; Y10S83/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2141318A
Cited
US1273318A
Cited
US2066466A
Cited
US2083617A
Cited
US2037825A
Cited
US2603928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |