US2801687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accordion doors
Assignee: Hough Manufacturing Corp
•
Filing: 1955-12-29
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Granted: 1957-08-06
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Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Robert H Ensign
- 👤 Don C Holloway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:21
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/92; E06B3/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |