US2729445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiral paper folding device
Assignee: Individual
•
Filing: 1952-11-05
•
Granted: 1956-01-03
•
Expires: 1972-11-05
Abstract
No abstract record available.
Inventors
- 👤 William M Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:51
CPC Classifications
B; B65; B65H; B65H45/00; B65H45/02; B65H45/06; B65H45/10; B65H45/101; B65H45/1015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1399098A
Cited
US1791569A
Cited
US1886312A
Cited
DE604811C
Cited
US1985676A
Cited
US2495994A
Cited
GB627367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |