US2613039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drawing filaments
Assignee: Johns Manville Corp
•
Filing: 1947-10-22
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Granted: 1952-10-07
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Expires: 1967-10-22
Abstract
No abstract record available.
Inventors
- 👤 Harry E Holcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:25
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03; B; B65; B65H; B65H54/00; B65H54/02; B65H54/28; B65H54/2803; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/38; Y; Y10; Y10S; Y10S242/00; Y10S242/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1552038A
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US1663853A
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US1968693A
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US1950219A
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US2135072A
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US2234986A
Cited
US2195859A
Cited
US2363205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |