US2813637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shingle take off and stacker
Assignee: Johns Manville Corp
•
Filing: 1952-06-24
•
Granted: 1957-11-19
•
Expires: 1972-06-24
Abstract
No abstract record available.
Inventors
- 👤 Walter M Perry
- 👤 James J Fitz-Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:07
CPC Classifications
B; B28; B28B; B28B13/00; B28B13/04; B65; B65G; B65G57/00; B65G57/02; B65G57/03; B65G57/04; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/113
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1985563A
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US2538972A
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US2341021A
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US2492889A
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US2596448A
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US2486196A
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US2566246A
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US2540972A
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US2508861A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |