US2545798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet folding machine
Assignee: Individual
•
Filing: 1948-03-16
•
Granted: 1951-03-20
•
Expires: 1968-03-16
Abstract
No abstract record available.
Inventors
- 👤 Robert L Sjostrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:30
CPC Classifications
D; D06; D06F; D06F89/00; Y; Y10; Y10S; Y10S493/00; Y10S493/937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US178344A
Cited
US282166A
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US455065A
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US1305748A
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US684286A
Cited
US1104276A
Cited
DE457159C
Cited
US2158144A
Cited
US2291487A
Cited
US2403394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |