US2800841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope processing machine
Assignee: PARTEN MACHINERY CO
•
Filing: 1954-02-16
•
Granted: 1957-07-30
•
Expires: 1974-02-16
Abstract
No abstract record available.
Inventors
- 👤 Ormonde P Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:05
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/26; B31B2150/00; B31B2160/00; B31B2160/10; B31B70/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1519439A
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US1884468A
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US2047710A
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US2109050A
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US2163037A
Cited
US2163038A
Cited
US2307907A
Cited
US2287719A
Cited
US2312162A
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US2568604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |