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Patent US2507036A successfully refreshed from Google Patents.
US2507036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle windshield
Assignee: Douglas Aircraft Co Inc
•
Filing: 1948-08-23
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Granted: 1950-05-09
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Expires: 1968-08-23
Abstract
No abstract record available.
Inventors
- 👤 John D Mccrumm
- 👤 Ernst H Piesset
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:21
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/023; B60S1/026; B64; B64C; B64C1/00; B64C1/14; B64C1/1476; B64C1/1492; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2021661A
Cited
US2429420A
Cited
US2467349A
Cited
US2562207A
Cited
US2465312A
Cited
US2470633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |