US2636220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bale breaker
Assignee: Armstrong World Industries Inc
•
Filing: 1947-10-07
•
Granted: 1953-04-28
•
Expires: 1967-10-07
Abstract
No abstract record available.
Inventors
- 👤 John D Lyall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:32
CPC Classifications
D; D01; D01G; D01G7/00; D01G7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US586778A
Cited
US668907A
Cited
US966493A
Cited
GB191000795A
Cited
US1340201A
Cited
US2533218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |