Patent US3442987A successfully refreshed from Google Patents.
US3442987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing decorative incandescent lamps
Assignee: GTE Sylvania Inc
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Filing: 1966-12-30
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Granted: 1969-05-06
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Expires: 1986-12-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Sentementes
- 👤 Carl Pomroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:30
CPC Classifications
H; H01; H01K; H01K7/00; H01K7/06; H01K1/00; H01K1/28; H01K1/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/4987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3127295A
Cited
US1937537A
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US2183691A
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US2683767A
Cited
US3009209A
Cited
US3002231A
Cited
US3148235A
Cited
US3116885A
Cited
US3223273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |